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Finding the Fourth Proportional to 48.73, 67.02 and 39.50

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Solution

The fourth proportional to 48.73, 67.02 and 39.50 is: 54.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.73 : 67.02 = 39.50 : x
  2. Step 2: Convert to fraction form
    48.73/67.02 = 39.50/x
  3. Step 3: Cross multiply
    48.73x = 67.02 × 39.50
  4. Step 4: Simplify right side
    48.73x = 2,647.29
  5. Step 5: Solve for x
    x = 2,647.29/48.73
  6. Step 6: Final answer
    x = 54.33

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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.