Finding the Fourth Proportional to 87,527.10, 131,449.05 and 76,640.70
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Solution
The fourth proportional to 87,527.10, 131,449.05 and 76,640.70 is: 115,099.75
Step by Step Solution
- Step 1: Write the proportion equation
87,527.10 : 131,449.05 = 76,640.70 : x - Step 2: Convert to fraction form
87,527.10/131,449.05 = 76,640.70/x - Step 3: Cross multiply
87,527.10x = 131,449.05 × 76,640.70 - Step 4: Simplify right side
87,527.10x = 10,074,347,206.34 - Step 5: Solve for x
x = 10,074,347,206.34/87,527.10 - Step 6: Final answer
x = 115,099.75
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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.