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Finding the Fourth Proportional to 43,908.72, 65,863.13 and 20,551.56

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Solution

The fourth proportional to 43,908.72, 65,863.13 and 20,551.56 is: 30,827.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,908.72 : 65,863.13 = 20,551.56 : x
  2. Step 2: Convert to fraction form
    43,908.72/65,863.13 = 20,551.56/x
  3. Step 3: Cross multiply
    43,908.72x = 65,863.13 × 20,551.56
  4. Step 4: Simplify right side
    43,908.72x = 1,353,589,965.23
  5. Step 5: Solve for x
    x = 1,353,589,965.23/43,908.72
  6. Step 6: Final answer
    x = 30,827.36

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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.