Home / 82,515.69-123,753.68-38,099.79

Finding the Fourth Proportional to 82,515.69, 123,753.68 and 38,099.79

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Solution

The fourth proportional to 82,515.69, 123,753.68 and 38,099.79 is: 57,140.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,515.69 : 123,753.68 = 38,099.79 : x
  2. Step 2: Convert to fraction form
    82,515.69/123,753.68 = 38,099.79/x
  3. Step 3: Cross multiply
    82,515.69x = 123,753.68 × 38,099.79
  4. Step 4: Simplify right side
    82,515.69x = 4,714,989,029.23
  5. Step 5: Solve for x
    x = 4,714,989,029.23/82,515.69
  6. Step 6: Final answer
    x = 57,140.52

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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.