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Finding the Third Proportional to 26,640 and 39,432

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Solution

The third proportional to 26,640 and 39,432 is: 58,366.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,640 : 39,432 = 39,432 : x
  2. Step 2: Convert to fraction form
    26,640/39,432 = 39,432/x
  3. Step 3: Cross multiply
    26,640x = 39,432 × 39,432
  4. Step 4: Simplify right side
    26,640x = 1,554,882,624
  5. Step 5: Solve for x
    x = 1,554,882,624/26,640
  6. Step 6: Final answer
    x = 58,366.46

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.