Finding the Fourth Proportional to 87,639.40, 131,472.30 and 32,231.08
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Solution
The fourth proportional to 87,639.40, 131,472.30 and 32,231.08 is: 48,351.47
Step by Step Solution
- Step 1: Write the proportion equation
87,639.40 : 131,472.30 = 32,231.08 : x - Step 2: Convert to fraction form
87,639.40/131,472.30 = 32,231.08/x - Step 3: Cross multiply
87,639.40x = 131,472.30 × 32,231.08 - Step 4: Simplify right side
87,639.40x = 4,237,494,219.08 - Step 5: Solve for x
x = 4,237,494,219.08/87,639.40 - Step 6: Final answer
x = 48,351.47
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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.