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Finding the Fourth Proportional to 43,906.88, 65,871.12 and 12,741.68

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Solution

The fourth proportional to 43,906.88, 65,871.12 and 12,741.68 is: 19,115.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,906.88 : 65,871.12 = 12,741.68 : x
  2. Step 2: Convert to fraction form
    43,906.88/65,871.12 = 12,741.68/x
  3. Step 3: Cross multiply
    43,906.88x = 65,871.12 × 12,741.68
  4. Step 4: Simplify right side
    43,906.88x = 839,308,732.28
  5. Step 5: Solve for x
    x = 839,308,732.28/43,906.88
  6. Step 6: Final answer
    x = 19,115.65

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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.