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Finding the Fourth Proportional to 67,183.38, 100,745.88 and 20,425.32

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Solution

The fourth proportional to 67,183.38, 100,745.88 and 20,425.32 is: 30,629.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,183.38 : 100,745.88 = 20,425.32 : x
  2. Step 2: Convert to fraction form
    67,183.38/100,745.88 = 20,425.32/x
  3. Step 3: Cross multiply
    67,183.38x = 100,745.88 × 20,425.32
  4. Step 4: Simplify right side
    67,183.38x = 2,057,766,837.68
  5. Step 5: Solve for x
    x = 2,057,766,837.68/67,183.38
  6. Step 6: Final answer
    x = 30,629.11

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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.