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Finding the Third Proportional to 36,372 and 78,470

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Solution

The third proportional to 36,372 and 78,470 is: 169,293.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,372 : 78,470 = 78,470 : x
  2. Step 2: Convert to fraction form
    36,372/78,470 = 78,470/x
  3. Step 3: Cross multiply
    36,372x = 78,470 × 78,470
  4. Step 4: Simplify right side
    36,372x = 6,157,540,900
  5. Step 5: Solve for x
    x = 6,157,540,900/36,372
  6. Step 6: Final answer
    x = 169,293.44

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.