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Finding the Third Proportional to 63,408 and 91,392

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Solution

The third proportional to 63,408 and 91,392 is: 131,726.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,408 : 91,392 = 91,392 : x
  2. Step 2: Convert to fraction form
    63,408/91,392 = 91,392/x
  3. Step 3: Cross multiply
    63,408x = 91,392 × 91,392
  4. Step 4: Simplify right side
    63,408x = 8,352,497,664
  5. Step 5: Solve for x
    x = 8,352,497,664/63,408
  6. Step 6: Final answer
    x = 131,726.24

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.