Home / 67,207.38-100,781.88-20,449.32

Finding the Fourth Proportional to 67,207.38, 100,781.88 and 20,449.32

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Solution

The fourth proportional to 67,207.38, 100,781.88 and 20,449.32 is: 30,665.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,207.38 : 100,781.88 = 20,449.32 : x
  2. Step 2: Convert to fraction form
    67,207.38/100,781.88 = 20,449.32/x
  3. Step 3: Cross multiply
    67,207.38x = 100,781.88 × 20,449.32
  4. Step 4: Simplify right side
    67,207.38x = 2,060,920,914.32
  5. Step 5: Solve for x
    x = 2,060,920,914.32/67,207.38
  6. Step 6: Final answer
    x = 30,665.10

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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.