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Finding the Fourth Proportional to 58.87, 81.03 and 50.65

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Solution

The fourth proportional to 58.87, 81.03 and 50.65 is: 69.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    58.87 : 81.03 = 50.65 : x
  2. Step 2: Convert to fraction form
    58.87/81.03 = 50.65/x
  3. Step 3: Cross multiply
    58.87x = 81.03 × 50.65
  4. Step 4: Simplify right side
    58.87x = 4,104.17
  5. Step 5: Solve for x
    x = 4,104.17/58.87
  6. Step 6: Final answer
    x = 69.72

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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.