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Finding the Third Proportional to 56,514 and 87,811

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Solution

The third proportional to 56,514 and 87,811 is: 136,440.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,514 : 87,811 = 87,811 : x
  2. Step 2: Convert to fraction form
    56,514/87,811 = 87,811/x
  3. Step 3: Cross multiply
    56,514x = 87,811 × 87,811
  4. Step 4: Simplify right side
    56,514x = 7,710,771,721
  5. Step 5: Solve for x
    x = 7,710,771,721/56,514
  6. Step 6: Final answer
    x = 136,440.03

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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.