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Finding the Third Proportional to 20,562 and 43,272

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Solution

The third proportional to 20,562 and 43,272 is: 91,064.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,562 : 43,272 = 43,272 : x
  2. Step 2: Convert to fraction form
    20,562/43,272 = 43,272/x
  3. Step 3: Cross multiply
    20,562x = 43,272 × 43,272
  4. Step 4: Simplify right side
    20,562x = 1,872,465,984
  5. Step 5: Solve for x
    x = 1,872,465,984/20,562
  6. Step 6: Final answer
    x = 91,064.39

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.