Home / 39,635.92-54,679.62-31,689.28

Finding the Fourth Proportional to 39,635.92, 54,679.62 and 31,689.28

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Solution

The fourth proportional to 39,635.92, 54,679.62 and 31,689.28 is: 43,716.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,635.92 : 54,679.62 = 31,689.28 : x
  2. Step 2: Convert to fraction form
    39,635.92/54,679.62 = 31,689.28/x
  3. Step 3: Cross multiply
    39,635.92x = 54,679.62 × 31,689.28
  4. Step 4: Simplify right side
    39,635.92x = 1,732,757,788.47
  5. Step 5: Solve for x
    x = 1,732,757,788.47/39,635.92
  6. Step 6: Final answer
    x = 43,716.86

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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.