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Finding the Third Proportional to 61,806 and 127,989

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Solution

The third proportional to 61,806 and 127,989 is: 265,041.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,806 : 127,989 = 127,989 : x
  2. Step 2: Convert to fraction form
    61,806/127,989 = 127,989/x
  3. Step 3: Cross multiply
    61,806x = 127,989 × 127,989
  4. Step 4: Simplify right side
    61,806x = 16,381,184,121
  5. Step 5: Solve for x
    x = 16,381,184,121/61,806
  6. Step 6: Final answer
    x = 265,041.97

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.