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Finding the Fourth Proportional to 50.65, 69.95 and 43.76

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Solution

The fourth proportional to 50.65, 69.95 and 43.76 is: 60.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    50.65 : 69.95 = 43.76 : x
  2. Step 2: Convert to fraction form
    50.65/69.95 = 43.76/x
  3. Step 3: Cross multiply
    50.65x = 69.95 × 43.76
  4. Step 4: Simplify right side
    50.65x = 3,061.01
  5. Step 5: Solve for x
    x = 3,061.01/50.65
  6. Step 6: Final answer
    x = 60.43

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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.