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Finding the Third Proportional to 28,702 and 60,878

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Solution

The third proportional to 28,702 and 60,878 is: 129,124.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,702 : 60,878 = 60,878 : x
  2. Step 2: Convert to fraction form
    28,702/60,878 = 60,878/x
  3. Step 3: Cross multiply
    28,702x = 60,878 × 60,878
  4. Step 4: Simplify right side
    28,702x = 3,706,130,884
  5. Step 5: Solve for x
    x = 3,706,130,884/28,702
  6. Step 6: Final answer
    x = 129,124.48

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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.