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Finding the Fourth Proportional to 83,838.60, 125,660.70 and 33,885.90

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Solution

The fourth proportional to 83,838.60, 125,660.70 and 33,885.90 is: 50,789.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,838.60 : 125,660.70 = 33,885.90 : x
  2. Step 2: Convert to fraction form
    83,838.60/125,660.70 = 33,885.90/x
  3. Step 3: Cross multiply
    83,838.60x = 125,660.70 × 33,885.90
  4. Step 4: Simplify right side
    83,838.60x = 4,258,125,914.13
  5. Step 5: Solve for x
    x = 4,258,125,914.13/83,838.60
  6. Step 6: Final answer
    x = 50,789.56

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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.