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Finding the Fourth Proportional to 66,781.80, 100,169.28 and 22,408.92

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Solution

The fourth proportional to 66,781.80, 100,169.28 and 22,408.92 is: 33,612.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,781.80 : 100,169.28 = 22,408.92 : x
  2. Step 2: Convert to fraction form
    66,781.80/100,169.28 = 22,408.92/x
  3. Step 3: Cross multiply
    66,781.80x = 100,169.28 × 22,408.92
  4. Step 4: Simplify right side
    66,781.80x = 2,244,685,381.98
  5. Step 5: Solve for x
    x = 2,244,685,381.98/66,781.80
  6. Step 6: Final answer
    x = 33,612.23

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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.