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Finding the Fourth Proportional to 84,073.12, 126,076.87 and 36,702.70

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Solution

The fourth proportional to 84,073.12, 126,076.87 and 36,702.70 is: 55,039.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,073.12 : 126,076.87 = 36,702.70 : x
  2. Step 2: Convert to fraction form
    84,073.12/126,076.87 = 36,702.70/x
  3. Step 3: Cross multiply
    84,073.12x = 126,076.87 × 36,702.70
  4. Step 4: Simplify right side
    84,073.12x = 4,627,361,267.24
  5. Step 5: Solve for x
    x = 4,627,361,267.24/84,073.12
  6. Step 6: Final answer
    x = 55,039.73

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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.