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Finding the Third Proportional to 12,745 and 29,987

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Solution

The third proportional to 12,745 and 29,987 is: 70,554.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,745 : 29,987 = 29,987 : x
  2. Step 2: Convert to fraction form
    12,745/29,987 = 29,987/x
  3. Step 3: Cross multiply
    12,745x = 29,987 × 29,987
  4. Step 4: Simplify right side
    12,745x = 899,220,169
  5. Step 5: Solve for x
    x = 899,220,169/12,745
  6. Step 6: Final answer
    x = 70,554.74

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Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.