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Finding the Fourth Proportional to 72,149.84, 108,255.89 and 38,863.24

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Solution

The fourth proportional to 72,149.84, 108,255.89 and 38,863.24 is: 58,311.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,149.84 : 108,255.89 = 38,863.24 : x
  2. Step 2: Convert to fraction form
    72,149.84/108,255.89 = 38,863.24/x
  3. Step 3: Cross multiply
    72,149.84x = 108,255.89 × 38,863.24
  4. Step 4: Simplify right side
    72,149.84x = 4,207,175,069.94
  5. Step 5: Solve for x
    x = 4,207,175,069.94/72,149.84
  6. Step 6: Final answer
    x = 58,311.64

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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.