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Finding the Third Proportional to 56,730 and 121,884

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Solution

The third proportional to 56,730 and 121,884 is: 261,866.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,730 : 121,884 = 121,884 : x
  2. Step 2: Convert to fraction form
    56,730/121,884 = 121,884/x
  3. Step 3: Cross multiply
    56,730x = 121,884 × 121,884
  4. Step 4: Simplify right side
    56,730x = 14,855,709,456
  5. Step 5: Solve for x
    x = 14,855,709,456/56,730
  6. Step 6: Final answer
    x = 261,866.90

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.