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Finding the Third Proportional to 28,206 and 43,605

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Solution

The third proportional to 28,206 and 43,605 is: 67,411.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,206 : 43,605 = 43,605 : x
  2. Step 2: Convert to fraction form
    28,206/43,605 = 43,605/x
  3. Step 3: Cross multiply
    28,206x = 43,605 × 43,605
  4. Step 4: Simplify right side
    28,206x = 1,901,396,025
  5. Step 5: Solve for x
    x = 1,901,396,025/28,206
  6. Step 6: Final answer
    x = 67,411.05

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.