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Finding the Fourth Proportional to 74,755.17, 112,132.74 and 51,310.53

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Solution

The fourth proportional to 74,755.17, 112,132.74 and 51,310.53 is: 76,965.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,755.17 : 112,132.74 = 51,310.53 : x
  2. Step 2: Convert to fraction form
    74,755.17/112,132.74 = 51,310.53/x
  3. Step 3: Cross multiply
    74,755.17x = 112,132.74 × 51,310.53
  4. Step 4: Simplify right side
    74,755.17x = 5,753,589,759.09
  5. Step 5: Solve for x
    x = 5,753,589,759.09/74,755.17
  6. Step 6: Final answer
    x = 76,965.78

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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.