Finding the Fourth Proportional to 71,915.86, 107,889.36 and 27,542.62
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Solution
The fourth proportional to 71,915.86, 107,889.36 and 27,542.62 is: 41,319.89
Step by Step Solution
- Step 1: Write the proportion equation
71,915.86 : 107,889.36 = 27,542.62 : x - Step 2: Convert to fraction form
71,915.86/107,889.36 = 27,542.62/x - Step 3: Cross multiply
71,915.86x = 107,889.36 × 27,542.62 - Step 4: Simplify right side
71,915.86x = 2,971,555,644.52 - Step 5: Solve for x
x = 2,971,555,644.52/71,915.86 - Step 6: Final answer
x = 41,319.89
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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.