Home / 76,906.30-115,359.45-47,227.90

Finding the Fourth Proportional to 76,906.30, 115,359.45 and 47,227.90

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Solution

The fourth proportional to 76,906.30, 115,359.45 and 47,227.90 is: 70,841.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,906.30 : 115,359.45 = 47,227.90 : x
  2. Step 2: Convert to fraction form
    76,906.30/115,359.45 = 47,227.90/x
  3. Step 3: Cross multiply
    76,906.30x = 115,359.45 × 47,227.90
  4. Step 4: Simplify right side
    76,906.30x = 5,448,184,568.66
  5. Step 5: Solve for x
    x = 5,448,184,568.66/76,906.30
  6. Step 6: Final answer
    x = 70,841.85

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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.