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Finding the Third Proportional to 21,816 and 46,818

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Solution

The third proportional to 21,816 and 46,818 is: 100,473.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,816 : 46,818 = 46,818 : x
  2. Step 2: Convert to fraction form
    21,816/46,818 = 46,818/x
  3. Step 3: Cross multiply
    21,816x = 46,818 × 46,818
  4. Step 4: Simplify right side
    21,816x = 2,191,925,124
  5. Step 5: Solve for x
    x = 2,191,925,124/21,816
  6. Step 6: Final answer
    x = 100,473.28

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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.