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Finding the Third Proportional to 55,066 and 121,511

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Solution

The third proportional to 55,066 and 121,511 is: 268,131.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,066 : 121,511 = 121,511 : x
  2. Step 2: Convert to fraction form
    55,066/121,511 = 121,511/x
  3. Step 3: Cross multiply
    55,066x = 121,511 × 121,511
  4. Step 4: Simplify right side
    55,066x = 14,764,923,121
  5. Step 5: Solve for x
    x = 14,764,923,121/55,066
  6. Step 6: Final answer
    x = 268,131.39

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.