Finding the Fourth Proportional to 77,788.26, 107,349.17 and 45,957.08
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Solution
The fourth proportional to 77,788.26, 107,349.17 and 45,957.08 is: 63,421.58
Step by Step Solution
- Step 1: Write the proportion equation
77,788.26 : 107,349.17 = 45,957.08 : x - Step 2: Convert to fraction form
77,788.26/107,349.17 = 45,957.08/x - Step 3: Cross multiply
77,788.26x = 107,349.17 × 45,957.08 - Step 4: Simplify right side
77,788.26x = 4,933,454,432.21 - Step 5: Solve for x
x = 4,933,454,432.21/77,788.26 - Step 6: Final answer
x = 63,421.58
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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.