Finding the Fourth Proportional to 71,379.05, 107,060.19 and 28,682.75
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Solution
The fourth proportional to 71,379.05, 107,060.19 and 28,682.75 is: 43,020.75
Step by Step Solution
- Step 1: Write the proportion equation
71,379.05 : 107,060.19 = 28,682.75 : x - Step 2: Convert to fraction form
71,379.05/107,060.19 = 28,682.75/x - Step 3: Cross multiply
71,379.05x = 107,060.19 × 28,682.75 - Step 4: Simplify right side
71,379.05x = 3,070,780,129.42 - Step 5: Solve for x
x = 3,070,780,129.42/71,379.05 - Step 6: Final answer
x = 43,020.75
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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.