Home / 83,749.20-125,429.40-57,310.80

Finding the Fourth Proportional to 83,749.20, 125,429.40 and 57,310.80

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Solution

The fourth proportional to 83,749.20, 125,429.40 and 57,310.80 is: 85,833.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,749.20 : 125,429.40 = 57,310.80 : x
  2. Step 2: Convert to fraction form
    83,749.20/125,429.40 = 57,310.80/x
  3. Step 3: Cross multiply
    83,749.20x = 125,429.40 × 57,310.80
  4. Step 4: Simplify right side
    83,749.20x = 7,188,459,257.52
  5. Step 5: Solve for x
    x = 7,188,459,257.52/83,749.20
  6. Step 6: Final answer
    x = 85,833.17

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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.