Home / 81,981.30-123,029.55-35,267.70

Finding the Fourth Proportional to 81,981.30, 123,029.55 and 35,267.70

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Solution

The fourth proportional to 81,981.30, 123,029.55 and 35,267.70 is: 52,926.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,981.30 : 123,029.55 = 35,267.70 : x
  2. Step 2: Convert to fraction form
    81,981.30/123,029.55 = 35,267.70/x
  3. Step 3: Cross multiply
    81,981.30x = 123,029.55 × 35,267.70
  4. Step 4: Simplify right side
    81,981.30x = 4,338,969,260.54
  5. Step 5: Solve for x
    x = 4,338,969,260.54/81,981.30
  6. Step 6: Final answer
    x = 52,926.33

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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.