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Finding the Fourth Proportional to 83,048.30, 124,572.45 and 80,861.30

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Solution

The fourth proportional to 83,048.30, 124,572.45 and 80,861.30 is: 121,291.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,048.30 : 124,572.45 = 80,861.30 : x
  2. Step 2: Convert to fraction form
    83,048.30/124,572.45 = 80,861.30/x
  3. Step 3: Cross multiply
    83,048.30x = 124,572.45 × 80,861.30
  4. Step 4: Simplify right side
    83,048.30x = 10,073,090,251.19
  5. Step 5: Solve for x
    x = 10,073,090,251.19/83,048.30
  6. Step 6: Final answer
    x = 121,291.95

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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.