Home / 82,318.68-123,489.78-25,397.40

Finding the Fourth Proportional to 82,318.68, 123,489.78 and 25,397.40

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Solution

The fourth proportional to 82,318.68, 123,489.78 and 25,397.40 is: 38,099.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,318.68 : 123,489.78 = 25,397.40 : x
  2. Step 2: Convert to fraction form
    82,318.68/123,489.78 = 25,397.40/x
  3. Step 3: Cross multiply
    82,318.68x = 123,489.78 × 25,397.40
  4. Step 4: Simplify right side
    82,318.68x = 3,136,319,338.57
  5. Step 5: Solve for x
    x = 3,136,319,338.57/82,318.68
  6. Step 6: Final answer
    x = 38,099.73

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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.