Finding the Fourth Proportional to 91,777.80, 126,653.46 and 53,563.62
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Solution
The fourth proportional to 91,777.80, 126,653.46 and 53,563.62 is: 73,917.85
Step by Step Solution
- Step 1: Write the proportion equation
91,777.80 : 126,653.46 = 53,563.62 : x - Step 2: Convert to fraction form
91,777.80/126,653.46 = 53,563.62/x - Step 3: Cross multiply
91,777.80x = 126,653.46 × 53,563.62 - Step 4: Simplify right side
91,777.80x = 6,784,017,803.13 - Step 5: Solve for x
x = 6,784,017,803.13/91,777.80 - Step 6: Final answer
x = 73,917.85
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.