k guys u rly need to learn this stuff instead of relying on google for answers, it's not hard, I promise.
Ratio is 5:4 Which is Length: Width. We're told the Length (in Inches) is 60. So ratio = 60: ?
A Ratio is just a simplified version of the actual numbers, k?
So The length 'scale', if you like, will be 60/5. =12. That means one 'unit' of Ratio stuff = 12. So then you work out the Width, by doing the Ratio number [4] x The Ratio 'scale' [12].