Finding the Fourth Proportional to 86,589.18, 129,861.90 and 44,445.69
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Solution
The fourth proportional to 86,589.18, 129,861.90 and 44,445.69 is: 66,657.31
Step by Step Solution
- Step 1: Write the proportion equation
86,589.18 : 129,861.90 = 44,445.69 : x - Step 2: Convert to fraction form
86,589.18/129,861.90 = 44,445.69/x - Step 3: Cross multiply
86,589.18x = 129,861.90 × 44,445.69 - Step 4: Simplify right side
86,589.18x = 5,771,801,750.21 - Step 5: Solve for x
x = 5,771,801,750.21/86,589.18 - Step 6: Final answer
x = 66,657.31
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.