Finding the Fourth Proportional to 102,472.96, 141,412.80 and 56,531.56
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Solution
The fourth proportional to 102,472.96, 141,412.80 and 56,531.56 is: 78,013.62
Step by Step Solution
- Step 1: Write the proportion equation
102,472.96 : 141,412.80 = 56,531.56 : x - Step 2: Convert to fraction form
102,472.96/141,412.80 = 56,531.56/x - Step 3: Cross multiply
102,472.96x = 141,412.80 × 56,531.56 - Step 4: Simplify right side
102,472.96x = 7,994,286,187.97 - Step 5: Solve for x
x = 7,994,286,187.97/102,472.96 - Step 6: Final answer
x = 78,013.62
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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.