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Finding the Third Proportional to 55,856 and 121,540

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Solution

The third proportional to 55,856 and 121,540 is: 264,465.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,856 : 121,540 = 121,540 : x
  2. Step 2: Convert to fraction form
    55,856/121,540 = 121,540/x
  3. Step 3: Cross multiply
    55,856x = 121,540 × 121,540
  4. Step 4: Simplify right side
    55,856x = 14,771,971,600
  5. Step 5: Solve for x
    x = 14,771,971,600/55,856
  6. Step 6: Final answer
    x = 264,465.26

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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.