I would reach out to the financial aid department at Fuqua. I dont know why you need 40k so quickly, most school dont require payment until you start and then pay semester by semester not lump sum. The most you should need within the next few months is 20k.
I highly doubt an alum would give you a loan unless it is a close personal friend/family. I know I would never do that. If I had a lot of money and wanted to give back to current students I would donate to scholarship funds. Investment wise, I would rather put my money into something I know more about than some soon to be MBA student.
If you want something in addition to student loans for tuition, you are going to have to get a private loan.
Kellogg Class of 2010...still active and willing to help. However, I do not do profile reviews, don't offer predictions on chances and am far to busy to review essays, so save the energy of writing me a PM seeking help for these. If I don't respond to a PM that is not one of the previously mentioned trash can destined messages, please don't take it personally I get so many messages I have a hard to responding to most. The more interesting, compelling, or humorous you message the more likely I am to respond.