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Finding the Fourth Proportional to 43,906.20, 65,843.10 and 21,712.20

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Solution

The fourth proportional to 43,906.20, 65,843.10 and 21,712.20 is: 32,560.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,906.20 : 65,843.10 = 21,712.20 : x
  2. Step 2: Convert to fraction form
    43,906.20/65,843.10 = 21,712.20/x
  3. Step 3: Cross multiply
    43,906.20x = 65,843.10 × 21,712.20
  4. Step 4: Simplify right side
    43,906.20x = 1,429,598,555.82
  5. Step 5: Solve for x
    x = 1,429,598,555.82/43,906.20
  6. Step 6: Final answer
    x = 32,560.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.