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Finding the Third Proportional to 56,367 and 87,400

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Solution

The third proportional to 56,367 and 87,400 is: 135,518.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,367 : 87,400 = 87,400 : x
  2. Step 2: Convert to fraction form
    56,367/87,400 = 87,400/x
  3. Step 3: Cross multiply
    56,367x = 87,400 × 87,400
  4. Step 4: Simplify right side
    56,367x = 7,638,760,000
  5. Step 5: Solve for x
    x = 7,638,760,000/56,367
  6. Step 6: Final answer
    x = 135,518.30

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.