Finding the Fourth Proportional to 71,614.64, 107,311.56 and 38,339.12
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Solution
The fourth proportional to 71,614.64, 107,311.56 and 38,339.12 is: 57,449.58
Step by Step Solution
- Step 1: Write the proportion equation
71,614.64 : 107,311.56 = 38,339.12 : x - Step 2: Convert to fraction form
71,614.64/107,311.56 = 38,339.12/x - Step 3: Cross multiply
71,614.64x = 107,311.56 × 38,339.12 - Step 4: Simplify right side
71,614.64x = 4,114,230,776.23 - Step 5: Solve for x
x = 4,114,230,776.23/71,614.64 - Step 6: Final answer
x = 57,449.58
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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.