Home / 81,769.52-122,701.87-34,381.18

Finding the Fourth Proportional to 81,769.52, 122,701.87 and 34,381.18

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Solution

The fourth proportional to 81,769.52, 122,701.87 and 34,381.18 is: 51,591.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,769.52 : 122,701.87 = 34,381.18 : x
  2. Step 2: Convert to fraction form
    81,769.52/122,701.87 = 34,381.18/x
  3. Step 3: Cross multiply
    81,769.52x = 122,701.87 × 34,381.18
  4. Step 4: Simplify right side
    81,769.52x = 4,218,635,078.81
  5. Step 5: Solve for x
    x = 4,218,635,078.81/81,769.52
  6. Step 6: Final answer
    x = 51,591.78

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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.