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Finding the Third Proportional to 36,434 and 78,915

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Solution

The third proportional to 36,434 and 78,915 is: 170,927.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,434 : 78,915 = 78,915 : x
  2. Step 2: Convert to fraction form
    36,434/78,915 = 78,915/x
  3. Step 3: Cross multiply
    36,434x = 78,915 × 78,915
  4. Step 4: Simplify right side
    36,434x = 6,227,577,225
  5. Step 5: Solve for x
    x = 6,227,577,225/36,434
  6. Step 6: Final answer
    x = 170,927.63

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.