Finding the Fourth Proportional to 87,732.21, 131,609.25 and 28,551.99
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Solution
The fourth proportional to 87,732.21, 131,609.25 and 28,551.99 is: 42,831.54
Step by Step Solution
- Step 1: Write the proportion equation
87,732.21 : 131,609.25 = 28,551.99 : x - Step 2: Convert to fraction form
87,732.21/131,609.25 = 28,551.99/x - Step 3: Cross multiply
87,732.21x = 131,609.25 × 28,551.99 - Step 4: Simplify right side
87,732.21x = 3,757,705,989.91 - Step 5: Solve for x
x = 3,757,705,989.91/87,732.21 - Step 6: Final answer
x = 42,831.54
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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.