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Finding the Third Proportional to 62,667 and 128,391

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Solution

The third proportional to 62,667 and 128,391 is: 263,045.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,667 : 128,391 = 128,391 : x
  2. Step 2: Convert to fraction form
    62,667/128,391 = 128,391/x
  3. Step 3: Cross multiply
    62,667x = 128,391 × 128,391
  4. Step 4: Simplify right side
    62,667x = 16,484,248,881
  5. Step 5: Solve for x
    x = 16,484,248,881/62,667
  6. Step 6: Final answer
    x = 263,045.13

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.