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Finding the Third Proportional to 48,288 and 71,920

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Solution

The third proportional to 48,288 and 71,920 is: 107,117.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,288 : 71,920 = 71,920 : x
  2. Step 2: Convert to fraction form
    48,288/71,920 = 71,920/x
  3. Step 3: Cross multiply
    48,288x = 71,920 × 71,920
  4. Step 4: Simplify right side
    48,288x = 5,172,486,400
  5. Step 5: Solve for x
    x = 5,172,486,400/48,288
  6. Step 6: Final answer
    x = 107,117.43

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.