Home / 82,250.31-123,376.19-19,920.87

Finding the Fourth Proportional to 82,250.31, 123,376.19 and 19,920.87

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Solution

The fourth proportional to 82,250.31, 123,376.19 and 19,920.87 is: 29,881.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,250.31 : 123,376.19 = 19,920.87 : x
  2. Step 2: Convert to fraction form
    82,250.31/123,376.19 = 19,920.87/x
  3. Step 3: Cross multiply
    82,250.31x = 123,376.19 × 19,920.87
  4. Step 4: Simplify right side
    82,250.31x = 2,457,760,942.48
  5. Step 5: Solve for x
    x = 2,457,760,942.48/82,250.31
  6. Step 6: Final answer
    x = 29,881.48

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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.