Home / 82,620.48-123,829.20-38,187.12

Finding the Fourth Proportional to 82,620.48, 123,829.20 and 38,187.12

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Solution

The fourth proportional to 82,620.48, 123,829.20 and 38,187.12 is: 57,233.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,620.48 : 123,829.20 = 38,187.12 : x
  2. Step 2: Convert to fraction form
    82,620.48/123,829.20 = 38,187.12/x
  3. Step 3: Cross multiply
    82,620.48x = 123,829.20 × 38,187.12
  4. Step 4: Simplify right side
    82,620.48x = 4,728,680,519.90
  5. Step 5: Solve for x
    x = 4,728,680,519.90/82,620.48
  6. Step 6: Final answer
    x = 57,233.76

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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.