Finding the Fourth Proportional to 91,707.12, 126,532.80 and 53,974.08
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Solution
The fourth proportional to 91,707.12, 126,532.80 and 53,974.08 is: 74,470.68
Step by Step Solution
- Step 1: Write the proportion equation
91,707.12 : 126,532.80 = 53,974.08 : x - Step 2: Convert to fraction form
91,707.12/126,532.80 = 53,974.08/x - Step 3: Cross multiply
91,707.12x = 126,532.80 × 53,974.08 - Step 4: Simplify right side
91,707.12x = 6,829,491,469.82 - Step 5: Solve for x
x = 6,829,491,469.82/91,707.12 - Step 6: Final answer
x = 74,470.68
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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.