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Finding the Third Proportional to 28,805 and 68,700

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Solution

The third proportional to 28,805 and 68,700 is: 163,849.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,805 : 68,700 = 68,700 : x
  2. Step 2: Convert to fraction form
    28,805/68,700 = 68,700/x
  3. Step 3: Cross multiply
    28,805x = 68,700 × 68,700
  4. Step 4: Simplify right side
    28,805x = 4,719,690,000
  5. Step 5: Solve for x
    x = 4,719,690,000/28,805
  6. Step 6: Final answer
    x = 163,849.68

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Why These Related Problems?

These problems maintain the same ratio (2.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.