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Finding the Third Proportional to 21,555 and 32,199.75

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Solution

The third proportional to 21,555 and 32,199.75 is: 48,101.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,555 : 32,199.75 = 32,199.75 : x
  2. Step 2: Convert to fraction form
    21,555/32,199.75 = 32,199.75/x
  3. Step 3: Cross multiply
    21,555x = 32,199.75 × 32,199.75
  4. Step 4: Simplify right side
    21,555x = 1,036,823,900.06
  5. Step 5: Solve for x
    x = 1,036,823,900.06/21,555
  6. Step 6: Final answer
    x = 48,101.32

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.