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Finding the Third Proportional to 32,309 and 68,455

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Solution

The third proportional to 32,309 and 68,455 is: 145,039.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,309 : 68,455 = 68,455 : x
  2. Step 2: Convert to fraction form
    32,309/68,455 = 68,455/x
  3. Step 3: Cross multiply
    32,309x = 68,455 × 68,455
  4. Step 4: Simplify right side
    32,309x = 4,686,087,025
  5. Step 5: Solve for x
    x = 4,686,087,025/32,309
  6. Step 6: Final answer
    x = 145,039.68

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.