Home / 76,961.20-115,448.34-27,036.94

Finding the Fourth Proportional to 76,961.20, 115,448.34 and 27,036.94

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Solution

The fourth proportional to 76,961.20, 115,448.34 and 27,036.94 is: 40,557.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,961.20 : 115,448.34 = 27,036.94 : x
  2. Step 2: Convert to fraction form
    76,961.20/115,448.34 = 27,036.94/x
  3. Step 3: Cross multiply
    76,961.20x = 115,448.34 × 27,036.94
  4. Step 4: Simplify right side
    76,961.20x = 3,121,369,841.68
  5. Step 5: Solve for x
    x = 3,121,369,841.68/76,961.20
  6. Step 6: Final answer
    x = 40,557.71

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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.