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Finding the Third Proportional to 56,019 and 121,512

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Solution

The third proportional to 56,019 and 121,512 is: 263,574.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,019 : 121,512 = 121,512 : x
  2. Step 2: Convert to fraction form
    56,019/121,512 = 121,512/x
  3. Step 3: Cross multiply
    56,019x = 121,512 × 121,512
  4. Step 4: Simplify right side
    56,019x = 14,765,166,144
  5. Step 5: Solve for x
    x = 14,765,166,144/56,019
  6. Step 6: Final answer
    x = 263,574.25

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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.