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Finding the Third Proportional to 42,563 and 68,580

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Solution

The third proportional to 42,563 and 68,580 is: 110,500.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,563 : 68,580 = 68,580 : x
  2. Step 2: Convert to fraction form
    42,563/68,580 = 68,580/x
  3. Step 3: Cross multiply
    42,563x = 68,580 × 68,580
  4. Step 4: Simplify right side
    42,563x = 4,703,216,400
  5. Step 5: Solve for x
    x = 4,703,216,400/42,563
  6. Step 6: Final answer
    x = 110,500.12

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.