Home / 77,105.12-115,658.48-27,175.91

Finding the Fourth Proportional to 77,105.12, 115,658.48 and 27,175.91

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Solution

The fourth proportional to 77,105.12, 115,658.48 and 27,175.91 is: 40,764.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,105.12 : 115,658.48 = 27,175.91 : x
  2. Step 2: Convert to fraction form
    77,105.12/115,658.48 = 27,175.91/x
  3. Step 3: Cross multiply
    77,105.12x = 115,658.48 × 27,175.91
  4. Step 4: Simplify right side
    77,105.12x = 3,143,123,932.86
  5. Step 5: Solve for x
    x = 3,143,123,932.86/77,105.12
  6. Step 6: Final answer
    x = 40,764.14

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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.