Finding the Fourth Proportional to 102,469.76, 141,407.97 and 57,147.80
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Solution
The fourth proportional to 102,469.76, 141,407.97 and 57,147.80 is: 78,863.80
Step by Step Solution
- Step 1: Write the proportion equation
102,469.76 : 141,407.97 = 57,147.80 : x - Step 2: Convert to fraction form
102,469.76/141,407.97 = 57,147.80/x - Step 3: Cross multiply
102,469.76x = 141,407.97 × 57,147.80 - Step 4: Simplify right side
102,469.76x = 8,081,154,387.97 - Step 5: Solve for x
x = 8,081,154,387.97/102,469.76 - Step 6: Final answer
x = 78,863.80
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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.