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Finding the Third Proportional to 31,394 and 64,228

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Solution

The third proportional to 31,394 and 64,228 is: 131,402.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,394 : 64,228 = 64,228 : x
  2. Step 2: Convert to fraction form
    31,394/64,228 = 64,228/x
  3. Step 3: Cross multiply
    31,394x = 64,228 × 64,228
  4. Step 4: Simplify right side
    31,394x = 4,125,235,984
  5. Step 5: Solve for x
    x = 4,125,235,984/31,394
  6. Step 6: Final answer
    x = 131,402.05

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.