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Finding the Fourth Proportional to 40,671.53, 61,009.46 and 12,610.97

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Solution

The fourth proportional to 40,671.53, 61,009.46 and 12,610.97 is: 18,917.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,671.53 : 61,009.46 = 12,610.97 : x
  2. Step 2: Convert to fraction form
    40,671.53/61,009.46 = 12,610.97/x
  3. Step 3: Cross multiply
    40,671.53x = 61,009.46 × 12,610.97
  4. Step 4: Simplify right side
    40,671.53x = 769,388,469.78
  5. Step 5: Solve for x
    x = 769,388,469.78/40,671.53
  6. Step 6: Final answer
    x = 18,917.13

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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.