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Finding the Third Proportional to 28,393 and 61,787

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Solution

The third proportional to 28,393 and 61,787 is: 134,456.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,393 : 61,787 = 61,787 : x
  2. Step 2: Convert to fraction form
    28,393/61,787 = 61,787/x
  3. Step 3: Cross multiply
    28,393x = 61,787 × 61,787
  4. Step 4: Simplify right side
    28,393x = 3,817,633,369
  5. Step 5: Solve for x
    x = 3,817,633,369/28,393
  6. Step 6: Final answer
    x = 134,456.85

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.