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Finding the Fourth Proportional to 81,937.92, 122,909.22 and 44,515.92

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Solution

The fourth proportional to 81,937.92, 122,909.22 and 44,515.92 is: 66,775.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,937.92 : 122,909.22 = 44,515.92 : x
  2. Step 2: Convert to fraction form
    81,937.92/122,909.22 = 44,515.92/x
  3. Step 3: Cross multiply
    81,937.92x = 122,909.22 × 44,515.92
  4. Step 4: Simplify right side
    81,937.92x = 5,471,417,004.78
  5. Step 5: Solve for x
    x = 5,471,417,004.78/81,937.92
  6. Step 6: Final answer
    x = 66,775.15

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1.5x scale

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.