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Finding the Fourth Proportional to 73,168.20, 109,740.03 and 20,565.38

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Solution

The fourth proportional to 73,168.20, 109,740.03 and 20,565.38 is: 30,844.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,168.20 : 109,740.03 = 20,565.38 : x
  2. Step 2: Convert to fraction form
    73,168.20/109,740.03 = 20,565.38/x
  3. Step 3: Cross multiply
    73,168.20x = 109,740.03 × 20,565.38
  4. Step 4: Simplify right side
    73,168.20x = 2,256,844,869.46
  5. Step 5: Solve for x
    x = 2,256,844,869.46/73,168.20
  6. Step 6: Final answer
    x = 30,844.61

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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.