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Finding the Third Proportional to 55,982 and 84,405

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Solution

The third proportional to 55,982 and 84,405 is: 127,258.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,982 : 84,405 = 84,405 : x
  2. Step 2: Convert to fraction form
    55,982/84,405 = 84,405/x
  3. Step 3: Cross multiply
    55,982x = 84,405 × 84,405
  4. Step 4: Simplify right side
    55,982x = 7,124,204,025
  5. Step 5: Solve for x
    x = 7,124,204,025/55,982
  6. Step 6: Final answer
    x = 127,258.83

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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.