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Finding the Fourth Proportional to 81,996.35, 122,874.84 and 36,348.98

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Solution

The fourth proportional to 81,996.35, 122,874.84 and 36,348.98 is: 54,470.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,996.35 : 122,874.84 = 36,348.98 : x
  2. Step 2: Convert to fraction form
    81,996.35/122,874.84 = 36,348.98/x
  3. Step 3: Cross multiply
    81,996.35x = 122,874.84 × 36,348.98
  4. Step 4: Simplify right side
    81,996.35x = 4,466,374,487.29
  5. Step 5: Solve for x
    x = 4,466,374,487.29/81,996.35
  6. Step 6: Final answer
    x = 54,470.41

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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.