Home / 80,943.87-111,716.10-49,133.97

Finding the Fourth Proportional to 80,943.87, 111,716.10 and 49,133.97

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Solution

The fourth proportional to 80,943.87, 111,716.10 and 49,133.97 is: 67,813.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,943.87 : 111,716.10 = 49,133.97 : x
  2. Step 2: Convert to fraction form
    80,943.87/111,716.10 = 49,133.97/x
  3. Step 3: Cross multiply
    80,943.87x = 111,716.10 × 49,133.97
  4. Step 4: Simplify right side
    80,943.87x = 5,489,055,505.92
  5. Step 5: Solve for x
    x = 5,489,055,505.92/80,943.87
  6. Step 6: Final answer
    x = 67,813.11

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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.