Finding the Fourth Proportional to 86,407.20, 129,610.80 and 24,077.70
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Solution
The fourth proportional to 86,407.20, 129,610.80 and 24,077.70 is: 36,116.55
Step by Step Solution
- Step 1: Write the proportion equation
86,407.20 : 129,610.80 = 24,077.70 : x - Step 2: Convert to fraction form
86,407.20/129,610.80 = 24,077.70/x - Step 3: Cross multiply
86,407.20x = 129,610.80 × 24,077.70 - Step 4: Simplify right side
86,407.20x = 3,120,729,959.16 - Step 5: Solve for x
x = 3,120,729,959.16/86,407.20 - Step 6: Final answer
x = 36,116.55
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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.