Finding the Fourth Proportional to 93,800.43, 129,432.74 and 74,728.58
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Solution
The fourth proportional to 93,800.43, 129,432.74 and 74,728.58 is: 103,115.99
Step by Step Solution
- Step 1: Write the proportion equation
93,800.43 : 129,432.74 = 74,728.58 : x - Step 2: Convert to fraction form
93,800.43/129,432.74 = 74,728.58/x - Step 3: Cross multiply
93,800.43x = 129,432.74 × 74,728.58 - Step 4: Simplify right side
93,800.43x = 9,672,323,844.90 - Step 5: Solve for x
x = 9,672,323,844.90/93,800.43 - Step 6: Final answer
x = 103,115.99
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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.