Home / 82,428.38-123,642.66-29,825.54

Finding the Fourth Proportional to 82,428.38, 123,642.66 and 29,825.54

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Solution

The fourth proportional to 82,428.38, 123,642.66 and 29,825.54 is: 44,738.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,428.38 : 123,642.66 = 29,825.54 : x
  2. Step 2: Convert to fraction form
    82,428.38/123,642.66 = 29,825.54/x
  3. Step 3: Cross multiply
    82,428.38x = 123,642.66 × 29,825.54
  4. Step 4: Simplify right side
    82,428.38x = 3,687,709,101.54
  5. Step 5: Solve for x
    x = 3,687,709,101.54/82,428.38
  6. Step 6: Final answer
    x = 44,738.34

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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.