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Finding the Third Proportional to 28,012 and 43,372

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Solution

The third proportional to 28,012 and 43,372 is: 67,154.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,012 : 43,372 = 43,372 : x
  2. Step 2: Convert to fraction form
    28,012/43,372 = 43,372/x
  3. Step 3: Cross multiply
    28,012x = 43,372 × 43,372
  4. Step 4: Simplify right side
    28,012x = 1,881,130,384
  5. Step 5: Solve for x
    x = 1,881,130,384/28,012
  6. Step 6: Final answer
    x = 67,154.45

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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.