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Finding the Third Proportional to 20,742.75 and 43,179.75

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Solution

The third proportional to 20,742.75 and 43,179.75 is: 89,886.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742.75 : 43,179.75 = 43,179.75 : x
  2. Step 2: Convert to fraction form
    20,742.75/43,179.75 = 43,179.75/x
  3. Step 3: Cross multiply
    20,742.75x = 43,179.75 × 43,179.75
  4. Step 4: Simplify right side
    20,742.75x = 1,864,490,810.06
  5. Step 5: Solve for x
    x = 1,864,490,810.06/20,742.75
  6. Step 6: Final answer
    x = 89,886.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.