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Finding the Third Proportional to 42,947 and 92,245

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Solution

The third proportional to 42,947 and 92,245 is: 198,131.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,947 : 92,245 = 92,245 : x
  2. Step 2: Convert to fraction form
    42,947/92,245 = 92,245/x
  3. Step 3: Cross multiply
    42,947x = 92,245 × 92,245
  4. Step 4: Simplify right side
    42,947x = 8,509,140,025
  5. Step 5: Solve for x
    x = 8,509,140,025/42,947
  6. Step 6: Final answer
    x = 198,131.19

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.