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Finding the Fourth Proportional to 81,667.97, 122,479.85 and 22,489.57

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Solution

The fourth proportional to 81,667.97, 122,479.85 and 22,489.57 is: 33,728.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,667.97 : 122,479.85 = 22,489.57 : x
  2. Step 2: Convert to fraction form
    81,667.97/122,479.85 = 22,489.57/x
  3. Step 3: Cross multiply
    81,667.97x = 122,479.85 × 22,489.57
  4. Step 4: Simplify right side
    81,667.97x = 2,754,519,369.49
  5. Step 5: Solve for x
    x = 2,754,519,369.49/81,667.97
  6. Step 6: Final answer
    x = 33,728.27

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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.