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Finding the Fourth Proportional to 83,609.70, 125,220.15 and 57,171.30

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Solution

The fourth proportional to 83,609.70, 125,220.15 and 57,171.30 is: 85,624.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,609.70 : 125,220.15 = 57,171.30 : x
  2. Step 2: Convert to fraction form
    83,609.70/125,220.15 = 57,171.30/x
  3. Step 3: Cross multiply
    83,609.70x = 125,220.15 × 57,171.30
  4. Step 4: Simplify right side
    83,609.70x = 7,158,998,761.70
  5. Step 5: Solve for x
    x = 7,158,998,761.70/83,609.70
  6. Step 6: Final answer
    x = 85,624.02

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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.