Home / 69,882.28-96,439.13-39,664.78

Finding the Fourth Proportional to 69,882.28, 96,439.13 and 39,664.78

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Solution

The fourth proportional to 69,882.28, 96,439.13 and 39,664.78 is: 54,738.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,882.28 : 96,439.13 = 39,664.78 : x
  2. Step 2: Convert to fraction form
    69,882.28/96,439.13 = 39,664.78/x
  3. Step 3: Cross multiply
    69,882.28x = 96,439.13 × 39,664.78
  4. Step 4: Simplify right side
    69,882.28x = 3,825,236,732.91
  5. Step 5: Solve for x
    x = 3,825,236,732.91/69,882.28
  6. Step 6: Final answer
    x = 54,738.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.