Home / 80,834.11-111,512.43-62,805.74

Finding the Fourth Proportional to 80,834.11, 111,512.43 and 62,805.74

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Solution

The fourth proportional to 80,834.11, 111,512.43 and 62,805.74 is: 86,641.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,834.11 : 111,512.43 = 62,805.74 : x
  2. Step 2: Convert to fraction form
    80,834.11/111,512.43 = 62,805.74/x
  3. Step 3: Cross multiply
    80,834.11x = 111,512.43 × 62,805.74
  4. Step 4: Simplify right side
    80,834.11x = 7,003,620,127.79
  5. Step 5: Solve for x
    x = 7,003,620,127.79/80,834.11
  6. Step 6: Final answer
    x = 86,641.90

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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.