Home / 76,819.38-115,149.84-29,421.54

Finding the Fourth Proportional to 76,819.38, 115,149.84 and 29,421.54

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Solution

The fourth proportional to 76,819.38, 115,149.84 and 29,421.54 is: 44,101.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,819.38 : 115,149.84 = 29,421.54 : x
  2. Step 2: Convert to fraction form
    76,819.38/115,149.84 = 29,421.54/x
  3. Step 3: Cross multiply
    76,819.38x = 115,149.84 × 29,421.54
  4. Step 4: Simplify right side
    76,819.38x = 3,387,885,623.55
  5. Step 5: Solve for x
    x = 3,387,885,623.55/76,819.38
  6. Step 6: Final answer
    x = 44,101.97

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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.