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Finding the Third Proportional to 28,712 and 60,903

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Solution

The third proportional to 28,712 and 60,903 is: 129,185.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,712 : 60,903 = 60,903 : x
  2. Step 2: Convert to fraction form
    28,712/60,903 = 60,903/x
  3. Step 3: Cross multiply
    28,712x = 60,903 × 60,903
  4. Step 4: Simplify right side
    28,712x = 3,709,175,409
  5. Step 5: Solve for x
    x = 3,709,175,409/28,712
  6. Step 6: Final answer
    x = 129,185.55

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.