Finding the Fourth Proportional to 81,929.62, 122,901.11 and 22,765.30
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Solution
The fourth proportional to 81,929.62, 122,901.11 and 22,765.30 is: 34,149.80
Step by Step Solution
- Step 1: Write the proportion equation
81,929.62 : 122,901.11 = 22,765.30 : x - Step 2: Convert to fraction form
81,929.62/122,901.11 = 22,765.30/x - Step 3: Cross multiply
81,929.62x = 122,901.11 × 22,765.30 - Step 4: Simplify right side
81,929.62x = 2,797,880,218.40 - Step 5: Solve for x
x = 2,797,880,218.40/81,929.62 - Step 6: Final answer
x = 34,149.80
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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.