Finding the Fourth Proportional to 87,651.76, 131,394.42 and 28,446.02
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Solution
The fourth proportional to 87,651.76, 131,394.42 and 28,446.02 is: 42,642.02
Step by Step Solution
- Step 1: Write the proportion equation
87,651.76 : 131,394.42 = 28,446.02 : x - Step 2: Convert to fraction form
87,651.76/131,394.42 = 28,446.02/x - Step 3: Cross multiply
87,651.76x = 131,394.42 × 28,446.02 - Step 4: Simplify right side
87,651.76x = 3,737,648,299.21 - Step 5: Solve for x
x = 3,737,648,299.21/87,651.76 - Step 6: Final answer
x = 42,642.02
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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.