Finding the Fourth Proportional to 81,471.52, 122,207.14 and 22,311.80
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Solution
The fourth proportional to 81,471.52, 122,207.14 and 22,311.80 is: 33,467.66
Step by Step Solution
- Step 1: Write the proportion equation
81,471.52 : 122,207.14 = 22,311.80 : x - Step 2: Convert to fraction form
81,471.52/122,207.14 = 22,311.80/x - Step 3: Cross multiply
81,471.52x = 122,207.14 × 22,311.80 - Step 4: Simplify right side
81,471.52x = 2,726,661,266.25 - Step 5: Solve for x
x = 2,726,661,266.25/81,471.52 - Step 6: Final answer
x = 33,467.66
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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.