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Finding the Fourth Proportional to 73,400.25, 110,105.87 and 20,813.97

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Solution

The fourth proportional to 73,400.25, 110,105.87 and 20,813.97 is: 31,222.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,400.25 : 110,105.87 = 20,813.97 : x
  2. Step 2: Convert to fraction form
    73,400.25/110,105.87 = 20,813.97/x
  3. Step 3: Cross multiply
    73,400.25x = 110,105.87 × 20,813.97
  4. Step 4: Simplify right side
    73,400.25x = 2,291,740,170.93
  5. Step 5: Solve for x
    x = 2,291,740,170.93/73,400.25
  6. Step 6: Final answer
    x = 31,222.51

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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.