Home / 80,992.11-111,781.41-49,154.86

Finding the Fourth Proportional to 80,992.11, 111,781.41 and 49,154.86

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Solution

The fourth proportional to 80,992.11, 111,781.41 and 49,154.86 is: 67,841.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,992.11 : 111,781.41 = 49,154.86 : x
  2. Step 2: Convert to fraction form
    80,992.11/111,781.41 = 49,154.86/x
  3. Step 3: Cross multiply
    80,992.11x = 111,781.41 × 49,154.86
  4. Step 4: Simplify right side
    80,992.11x = 5,494,599,559.15
  5. Step 5: Solve for x
    x = 5,494,599,559.15/80,992.11
  6. Step 6: Final answer
    x = 67,841.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.