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Finding the Third Proportional to 20,124 and 42,246

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Solution

The third proportional to 20,124 and 42,246 is: 88,686.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,124 : 42,246 = 42,246 : x
  2. Step 2: Convert to fraction form
    20,124/42,246 = 42,246/x
  3. Step 3: Cross multiply
    20,124x = 42,246 × 42,246
  4. Step 4: Simplify right side
    20,124x = 1,784,724,516
  5. Step 5: Solve for x
    x = 1,784,724,516/20,124
  6. Step 6: Final answer
    x = 88,686.37

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.