Home / 83,911.20-125,919.92-76,029.81

Finding the Fourth Proportional to 83,911.20, 125,919.92 and 76,029.81

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Solution

The fourth proportional to 83,911.20, 125,919.92 and 76,029.81 is: 114,092.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,911.20 : 125,919.92 = 76,029.81 : x
  2. Step 2: Convert to fraction form
    83,911.20/125,919.92 = 76,029.81/x
  3. Step 3: Cross multiply
    83,911.20x = 125,919.92 × 76,029.81
  4. Step 4: Simplify right side
    83,911.20x = 9,573,667,212.67
  5. Step 5: Solve for x
    x = 9,573,667,212.67/83,911.20
  6. Step 6: Final answer
    x = 114,092.84

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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.