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Finding the Third Proportional to 21,686 and 44,316

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Solution

The third proportional to 21,686 and 44,316 is: 90,561.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,686 : 44,316 = 44,316 : x
  2. Step 2: Convert to fraction form
    21,686/44,316 = 44,316/x
  3. Step 3: Cross multiply
    21,686x = 44,316 × 44,316
  4. Step 4: Simplify right side
    21,686x = 1,963,907,856
  5. Step 5: Solve for x
    x = 1,963,907,856/21,686
  6. Step 6: Final answer
    x = 90,561.09

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.