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Finding the Third Proportional to 39,212 and 84,308

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Solution

The third proportional to 39,212 and 84,308 is: 181,266.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,212 : 84,308 = 84,308 : x
  2. Step 2: Convert to fraction form
    39,212/84,308 = 84,308/x
  3. Step 3: Cross multiply
    39,212x = 84,308 × 84,308
  4. Step 4: Simplify right side
    39,212x = 7,107,838,864
  5. Step 5: Solve for x
    x = 7,107,838,864/39,212
  6. Step 6: Final answer
    x = 181,266.93

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.