For example, if I currently have $10,000 and am loaned $3,000, bringing me to $13,000, could I take the percentage of the loan (23%) and multiply it by my ending balance? So,if a year later, my ending balance is $37,245, would taking 23% of this balance ($8,566) provide me with the correct amount of funds? Then take the 50/50 split profit amount ($4,283) and send it back to the loaner? Does my math seem to add up?
Think of it, your share is 76.92%, the rest is your friend's. If your ending balance is $37,245, you should get the percentage of your share, then that should be $28,648. His will be $8596. Do not cut it on half, because that was not your agreement, get the 23% from his profit. That should be $1977. He should have a total of $6619 while you get a total balance of $30,625.