Home / 81,991.30-123,044.55-35,277.70

Finding the Fourth Proportional to 81,991.30, 123,044.55 and 35,277.70

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Solution

The fourth proportional to 81,991.30, 123,044.55 and 35,277.70 is: 52,941.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,991.30 : 123,044.55 = 35,277.70 : x
  2. Step 2: Convert to fraction form
    81,991.30/123,044.55 = 35,277.70/x
  3. Step 3: Cross multiply
    81,991.30x = 123,044.55 × 35,277.70
  4. Step 4: Simplify right side
    81,991.30x = 4,340,728,721.54
  5. Step 5: Solve for x
    x = 4,340,728,721.54/81,991.30
  6. Step 6: Final answer
    x = 52,941.33

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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.