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Finding the Third Proportional to 39,398 and 65,655

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Solution

The third proportional to 39,398 and 65,655 is: 109,411.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,398 : 65,655 = 65,655 : x
  2. Step 2: Convert to fraction form
    39,398/65,655 = 65,655/x
  3. Step 3: Cross multiply
    39,398x = 65,655 × 65,655
  4. Step 4: Simplify right side
    39,398x = 4,310,579,025
  5. Step 5: Solve for x
    x = 4,310,579,025/39,398
  6. Step 6: Final answer
    x = 109,411.11

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Why These Related Problems?

These problems maintain the same ratio (1.67) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.