Home / 83,928.20-125,849.10-31,310.60

Finding the Fourth Proportional to 83,928.20, 125,849.10 and 31,310.60

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Solution

The fourth proportional to 83,928.20, 125,849.10 and 31,310.60 is: 46,949.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,928.20 : 125,849.10 = 31,310.60 : x
  2. Step 2: Convert to fraction form
    83,928.20/125,849.10 = 31,310.60/x
  3. Step 3: Cross multiply
    83,928.20x = 125,849.10 × 31,310.60
  4. Step 4: Simplify right side
    83,928.20x = 3,940,410,830.46
  5. Step 5: Solve for x
    x = 3,940,410,830.46/83,928.20
  6. Step 6: Final answer
    x = 46,949.78

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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.