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Finding the Third Proportional to 55,258 and 87,632

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Solution

The third proportional to 55,258 and 87,632 is: 138,972.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,258 : 87,632 = 87,632 : x
  2. Step 2: Convert to fraction form
    55,258/87,632 = 87,632/x
  3. Step 3: Cross multiply
    55,258x = 87,632 × 87,632
  4. Step 4: Simplify right side
    55,258x = 7,679,367,424
  5. Step 5: Solve for x
    x = 7,679,367,424/55,258
  6. Step 6: Final answer
    x = 138,972.95

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.