Home / 76,939.38-115,105.41-58,273.20

Finding the Fourth Proportional to 76,939.38, 115,105.41 and 58,273.20

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Solution

The fourth proportional to 76,939.38, 115,105.41 and 58,273.20 is: 87,179.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,939.38 : 115,105.41 = 58,273.20 : x
  2. Step 2: Convert to fraction form
    76,939.38/115,105.41 = 58,273.20/x
  3. Step 3: Cross multiply
    76,939.38x = 115,105.41 × 58,273.20
  4. Step 4: Simplify right side
    76,939.38x = 6,707,560,578.01
  5. Step 5: Solve for x
    x = 6,707,560,578.01/76,939.38
  6. Step 6: Final answer
    x = 87,179.81

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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.