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Finding the Fourth Proportional to 61,138.28, 91,711.14 and 16,763.24

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Solution

The fourth proportional to 61,138.28, 91,711.14 and 16,763.24 is: 25,145.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,138.28 : 91,711.14 = 16,763.24 : x
  2. Step 2: Convert to fraction form
    61,138.28/91,711.14 = 16,763.24/x
  3. Step 3: Cross multiply
    61,138.28x = 91,711.14 × 16,763.24
  4. Step 4: Simplify right side
    61,138.28x = 1,537,375,850.49
  5. Step 5: Solve for x
    x = 1,537,375,850.49/61,138.28
  6. Step 6: Final answer
    x = 25,145.88

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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.