Finding the Fourth Proportional to 71,679.22, 107,458.68 and 31,691.75
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Solution
The fourth proportional to 71,679.22, 107,458.68 and 31,691.75 is: 47,511.03
Step by Step Solution
- Step 1: Write the proportion equation
71,679.22 : 107,458.68 = 31,691.75 : x - Step 2: Convert to fraction form
71,679.22/107,458.68 = 31,691.75/x - Step 3: Cross multiply
71,679.22x = 107,458.68 × 31,691.75 - Step 4: Simplify right side
71,679.22x = 3,405,553,203.44 - Step 5: Solve for x
x = 3,405,553,203.44/71,679.22 - Step 6: Final answer
x = 47,511.03
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.