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Finding the Third Proportional to 55,971 and 121,686

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Solution

The third proportional to 55,971 and 121,686 is: 264,556.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,971 : 121,686 = 121,686 : x
  2. Step 2: Convert to fraction form
    55,971/121,686 = 121,686/x
  3. Step 3: Cross multiply
    55,971x = 121,686 × 121,686
  4. Step 4: Simplify right side
    55,971x = 14,807,482,596
  5. Step 5: Solve for x
    x = 14,807,482,596/55,971
  6. Step 6: Final answer
    x = 264,556.33

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.