Finding the Fourth Proportional to 77,445.20, 115,876.20 and 51,201.20
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Solution
The fourth proportional to 77,445.20, 115,876.20 and 51,201.20 is: 76,609.02
Step by Step Solution
- Step 1: Write the proportion equation
77,445.20 : 115,876.20 = 51,201.20 : x - Step 2: Convert to fraction form
77,445.20/115,876.20 = 51,201.20/x - Step 3: Cross multiply
77,445.20x = 115,876.20 × 51,201.20 - Step 4: Simplify right side
77,445.20x = 5,933,000,491.44 - Step 5: Solve for x
x = 5,933,000,491.44/77,445.20 - Step 6: Final answer
x = 76,609.02
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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.