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Finding the Fourth Proportional to 50.62, 69.85 and 36.09

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Solution

The fourth proportional to 50.62, 69.85 and 36.09 is: 49.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    50.62 : 69.85 = 36.09 : x
  2. Step 2: Convert to fraction form
    50.62/69.85 = 36.09/x
  3. Step 3: Cross multiply
    50.62x = 69.85 × 36.09
  4. Step 4: Simplify right side
    50.62x = 2,520.89
  5. Step 5: Solve for x
    x = 2,520.89/50.62
  6. Step 6: Final answer
    x = 49.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.