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Finding the Third Proportional to 48,478 and 71,121

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Solution

The third proportional to 48,478 and 71,121 is: 104,340.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,478 : 71,121 = 71,121 : x
  2. Step 2: Convert to fraction form
    48,478/71,121 = 71,121/x
  3. Step 3: Cross multiply
    48,478x = 71,121 × 71,121
  4. Step 4: Simplify right side
    48,478x = 5,058,196,641
  5. Step 5: Solve for x
    x = 5,058,196,641/48,478
  6. Step 6: Final answer
    x = 104,340.04

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.