Finding the Fourth Proportional to 98,412.14, 135,874.13 and 75,711.08
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Solution
The fourth proportional to 98,412.14, 135,874.13 and 75,711.08 is: 104,531.58
Step by Step Solution
- Step 1: Write the proportion equation
98,412.14 : 135,874.13 = 75,711.08 : x - Step 2: Convert to fraction form
98,412.14/135,874.13 = 75,711.08/x - Step 3: Cross multiply
98,412.14x = 135,874.13 × 75,711.08 - Step 4: Simplify right side
98,412.14x = 10,287,176,068.43 - Step 5: Solve for x
x = 10,287,176,068.43/98,412.14 - Step 6: Final answer
x = 104,531.58
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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.