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Finding the Fourth Proportional to 73,125.28, 109,687.92 and 17,721.28

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Solution

The fourth proportional to 73,125.28, 109,687.92 and 17,721.28 is: 26,581.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,125.28 : 109,687.92 = 17,721.28 : x
  2. Step 2: Convert to fraction form
    73,125.28/109,687.92 = 17,721.28/x
  3. Step 3: Cross multiply
    73,125.28x = 109,687.92 × 17,721.28
  4. Step 4: Simplify right side
    73,125.28x = 1,943,810,513.27
  5. Step 5: Solve for x
    x = 1,943,810,513.27/73,125.28
  6. Step 6: Final answer
    x = 26,581.92

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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.