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Finding the Third Proportional to 36,438 and 79,392

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Solution

The third proportional to 36,438 and 79,392 is: 172,981.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,438 : 79,392 = 79,392 : x
  2. Step 2: Convert to fraction form
    36,438/79,392 = 79,392/x
  3. Step 3: Cross multiply
    36,438x = 79,392 × 79,392
  4. Step 4: Simplify right side
    36,438x = 6,303,089,664
  5. Step 5: Solve for x
    x = 6,303,089,664/36,438
  6. Step 6: Final answer
    x = 172,981.22

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.