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Finding the Third Proportional to 43,889 and 66,222

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Solution

The third proportional to 43,889 and 66,222 is: 99,919.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,889 : 66,222 = 66,222 : x
  2. Step 2: Convert to fraction form
    43,889/66,222 = 66,222/x
  3. Step 3: Cross multiply
    43,889x = 66,222 × 66,222
  4. Step 4: Simplify right side
    43,889x = 4,385,353,284
  5. Step 5: Solve for x
    x = 4,385,353,284/43,889
  6. Step 6: Final answer
    x = 99,919.19

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.