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Finding the Third Proportional to 69,989 and 88,621

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Solution

The third proportional to 69,989 and 88,621 is: 112,213.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,989 : 88,621 = 88,621 : x
  2. Step 2: Convert to fraction form
    69,989/88,621 = 88,621/x
  3. Step 3: Cross multiply
    69,989x = 88,621 × 88,621
  4. Step 4: Simplify right side
    69,989x = 7,853,681,641
  5. Step 5: Solve for x
    x = 7,853,681,641/69,989
  6. Step 6: Final answer
    x = 112,213.09

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Why These Related Problems?

These problems maintain the same ratio (1.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.