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Finding the Fourth Proportional to 83,901.75, 125,907.30 and 42,348.75

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Solution

The fourth proportional to 83,901.75, 125,907.30 and 42,348.75 is: 63,550.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,901.75 : 125,907.30 = 42,348.75 : x
  2. Step 2: Convert to fraction form
    83,901.75/125,907.30 = 42,348.75/x
  3. Step 3: Cross multiply
    83,901.75x = 125,907.30 × 42,348.75
  4. Step 4: Simplify right side
    83,901.75x = 5,332,016,770.88
  5. Step 5: Solve for x
    x = 5,332,016,770.88/83,901.75
  6. Step 6: Final answer
    x = 63,550.72

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1.5x scale

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.