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Finding the Fourth Proportional to 50.64, 69.76 and 41

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Solution

The fourth proportional to 50.64, 69.76 and 41 is: 56.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    50.64 : 69.76 = 41 : x
  2. Step 2: Convert to fraction form
    50.64/69.76 = 41/x
  3. Step 3: Cross multiply
    50.64x = 69.76 × 41
  4. Step 4: Simplify right side
    50.64x = 2,860.16
  5. Step 5: Solve for x
    x = 2,860.16/50.64
  6. Step 6: Final answer
    x = 56.48

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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.