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Finding the Fourth Proportional to 48.82, 73.54 and 39.91

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Solution

The fourth proportional to 48.82, 73.54 and 39.91 is: 60.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.82 : 73.54 = 39.91 : x
  2. Step 2: Convert to fraction form
    48.82/73.54 = 39.91/x
  3. Step 3: Cross multiply
    48.82x = 73.54 × 39.91
  4. Step 4: Simplify right side
    48.82x = 2,934.98
  5. Step 5: Solve for x
    x = 2,934.98/48.82
  6. Step 6: Final answer
    x = 60.12

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.