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Finding the Third Proportional to 31,607 and 47,491

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Solution

The third proportional to 31,607 and 47,491 is: 71,357.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,607 : 47,491 = 47,491 : x
  2. Step 2: Convert to fraction form
    31,607/47,491 = 47,491/x
  3. Step 3: Cross multiply
    31,607x = 47,491 × 47,491
  4. Step 4: Simplify right side
    31,607x = 2,255,395,081
  5. Step 5: Solve for x
    x = 2,255,395,081/31,607
  6. Step 6: Final answer
    x = 71,357.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.