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Finding the Third Proportional to 30,591 and 47,031

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Solution

The third proportional to 30,591 and 47,031 is: 72,306.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,591 : 47,031 = 47,031 : x
  2. Step 2: Convert to fraction form
    30,591/47,031 = 47,031/x
  3. Step 3: Cross multiply
    30,591x = 47,031 × 47,031
  4. Step 4: Simplify right side
    30,591x = 2,211,914,961
  5. Step 5: Solve for x
    x = 2,211,914,961/30,591
  6. Step 6: Final answer
    x = 72,306.07

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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.