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Finding the Third Proportional to 55,720 and 121,595

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Solution

The third proportional to 55,720 and 121,595 is: 265,350.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,720 : 121,595 = 121,595 : x
  2. Step 2: Convert to fraction form
    55,720/121,595 = 121,595/x
  3. Step 3: Cross multiply
    55,720x = 121,595 × 121,595
  4. Step 4: Simplify right side
    55,720x = 14,785,344,025
  5. Step 5: Solve for x
    x = 14,785,344,025/55,720
  6. Step 6: Final answer
    x = 265,350.75

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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.