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Finding the Third Proportional to 28,685 and 61,902

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Solution

The third proportional to 28,685 and 61,902 is: 133,584.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,685 : 61,902 = 61,902 : x
  2. Step 2: Convert to fraction form
    28,685/61,902 = 61,902/x
  3. Step 3: Cross multiply
    28,685x = 61,902 × 61,902
  4. Step 4: Simplify right side
    28,685x = 3,831,857,604
  5. Step 5: Solve for x
    x = 3,831,857,604/28,685
  6. Step 6: Final answer
    x = 133,584.02

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.