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Finding the Third Proportional to 53,478 and 80,217

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Solution

The third proportional to 53,478 and 80,217 is: 120,325.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,478 : 80,217 = 80,217 : x
  2. Step 2: Convert to fraction form
    53,478/80,217 = 80,217/x
  3. Step 3: Cross multiply
    53,478x = 80,217 × 80,217
  4. Step 4: Simplify right side
    53,478x = 6,434,767,089
  5. Step 5: Solve for x
    x = 6,434,767,089/53,478
  6. Step 6: Final answer
    x = 120,325.50

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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.