There are 48/4 = <<48/4=12>>12 sets of science fiction books.
There are 12 sets x 3 mystery books/set = <<12*3=36>>36 mystery books.
There are 4 sets x 5 biographies/set = 20 biographies.
The total number of books is 48 + 36 + 20 = <<48+36+20=104>>104 books. Answer: \boxed{104}.
The ratio of mystery books to the number of science fiction books is 4:3. The number of sci-fi books to the number of biographies is 4:5. If there are 48 sci-fi books what is the total number of books
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