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Finding the Fourth Proportional to 45,754.80, 68,747.40 and 29,122.80

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Solution

The fourth proportional to 45,754.80, 68,747.40 and 29,122.80 is: 43,757.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,754.80 : 68,747.40 = 29,122.80 : x
  2. Step 2: Convert to fraction form
    45,754.80/68,747.40 = 29,122.80/x
  3. Step 3: Cross multiply
    45,754.80x = 68,747.40 × 29,122.80
  4. Step 4: Simplify right side
    45,754.80x = 2,002,116,780.72
  5. Step 5: Solve for x
    x = 2,002,116,780.72/45,754.80
  6. Step 6: Final answer
    x = 43,757.52

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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.