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Finding the Third Proportional to 19,313 and 42,318

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Solution

The third proportional to 19,313 and 42,318 is: 92,725.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,313 : 42,318 = 42,318 : x
  2. Step 2: Convert to fraction form
    19,313/42,318 = 42,318/x
  3. Step 3: Cross multiply
    19,313x = 42,318 × 42,318
  4. Step 4: Simplify right side
    19,313x = 1,790,813,124
  5. Step 5: Solve for x
    x = 1,790,813,124/19,313
  6. Step 6: Final answer
    x = 92,725.79

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.