Finding the Fourth Proportional to 102,839.46, 141,918.05 and 57,517.26
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Solution
The fourth proportional to 102,839.46, 141,918.05 and 57,517.26 is: 79,373.59
Step by Step Solution
- Step 1: Write the proportion equation
102,839.46 : 141,918.05 = 57,517.26 : x - Step 2: Convert to fraction form
102,839.46/141,918.05 = 57,517.26/x - Step 3: Cross multiply
102,839.46x = 141,918.05 × 57,517.26 - Step 4: Simplify right side
102,839.46x = 8,162,737,092.96 - Step 5: Solve for x
x = 8,162,737,092.96/102,839.46 - Step 6: Final answer
x = 79,373.59
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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.