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Finding the Third Proportional to 28,209 and 43,536

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Solution

The third proportional to 28,209 and 43,536 is: 67,190.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,209 : 43,536 = 43,536 : x
  2. Step 2: Convert to fraction form
    28,209/43,536 = 43,536/x
  3. Step 3: Cross multiply
    28,209x = 43,536 × 43,536
  4. Step 4: Simplify right side
    28,209x = 1,895,383,296
  5. Step 5: Solve for x
    x = 1,895,383,296/28,209
  6. Step 6: Final answer
    x = 67,190.73

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.