Home / 81,961.28-122,885.76-29,369.60

Finding the Fourth Proportional to 81,961.28, 122,885.76 and 29,369.60

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Solution

The fourth proportional to 81,961.28, 122,885.76 and 29,369.60 is: 44,034.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,961.28 : 122,885.76 = 29,369.60 : x
  2. Step 2: Convert to fraction form
    81,961.28/122,885.76 = 29,369.60/x
  3. Step 3: Cross multiply
    81,961.28x = 122,885.76 × 29,369.60
  4. Step 4: Simplify right side
    81,961.28x = 3,609,105,616.90
  5. Step 5: Solve for x
    x = 3,609,105,616.90/81,961.28
  6. Step 6: Final answer
    x = 44,034.28

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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.