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Finding the Third Proportional to 45,016 and 69,878

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Solution

The third proportional to 45,016 and 69,878 is: 108,471.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,016 : 69,878 = 69,878 : x
  2. Step 2: Convert to fraction form
    45,016/69,878 = 69,878/x
  3. Step 3: Cross multiply
    45,016x = 69,878 × 69,878
  4. Step 4: Simplify right side
    45,016x = 4,882,934,884
  5. Step 5: Solve for x
    x = 4,882,934,884/45,016
  6. Step 6: Final answer
    x = 108,471.10

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.