Finding the Fourth Proportional to 80,760.40, 121,126.20 and 51,125.20
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Solution
The fourth proportional to 80,760.40, 121,126.20 and 51,125.20 is: 76,678.68
Step by Step Solution
- Step 1: Write the proportion equation
80,760.40 : 121,126.20 = 51,125.20 : x - Step 2: Convert to fraction form
80,760.40/121,126.20 = 51,125.20/x - Step 3: Cross multiply
80,760.40x = 121,126.20 × 51,125.20 - Step 4: Simplify right side
80,760.40x = 6,192,601,200.24 - Step 5: Solve for x
x = 6,192,601,200.24/80,760.40 - Step 6: Final answer
x = 76,678.68
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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.