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Finding the Third Proportional to 28,586 and 43,972

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Solution

The third proportional to 28,586 and 43,972 is: 67,639.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,586 : 43,972 = 43,972 : x
  2. Step 2: Convert to fraction form
    28,586/43,972 = 43,972/x
  3. Step 3: Cross multiply
    28,586x = 43,972 × 43,972
  4. Step 4: Simplify right side
    28,586x = 1,933,536,784
  5. Step 5: Solve for x
    x = 1,933,536,784/28,586
  6. Step 6: Final answer
    x = 67,639.29

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.