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Finding the Third Proportional to 28,989 and 43,983

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Solution

The third proportional to 28,989 and 43,983 is: 66,732.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,989 : 43,983 = 43,983 : x
  2. Step 2: Convert to fraction form
    28,989/43,983 = 43,983/x
  3. Step 3: Cross multiply
    28,989x = 43,983 × 43,983
  4. Step 4: Simplify right side
    28,989x = 1,934,504,289
  5. Step 5: Solve for x
    x = 1,934,504,289/28,989
  6. Step 6: Final answer
    x = 66,732.36

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.