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Finding the Third Proportional to 27,308 and 43,421

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Solution

The third proportional to 27,308 and 43,421 is: 69,041.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,308 : 43,421 = 43,421 : x
  2. Step 2: Convert to fraction form
    27,308/43,421 = 43,421/x
  3. Step 3: Cross multiply
    27,308x = 43,421 × 43,421
  4. Step 4: Simplify right side
    27,308x = 1,885,383,241
  5. Step 5: Solve for x
    x = 1,885,383,241/27,308
  6. Step 6: Final answer
    x = 69,041.43

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.