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Finding the Fourth Proportional to 43,865.88, 65,808.56 and 20,479.56

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Solution

The fourth proportional to 43,865.88, 65,808.56 and 20,479.56 is: 30,723.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,865.88 : 65,808.56 = 20,479.56 : x
  2. Step 2: Convert to fraction form
    43,865.88/65,808.56 = 20,479.56/x
  3. Step 3: Cross multiply
    43,865.88x = 65,808.56 × 20,479.56
  4. Step 4: Simplify right side
    43,865.88x = 1,347,730,353.03
  5. Step 5: Solve for x
    x = 1,347,730,353.03/43,865.88
  6. Step 6: Final answer
    x = 30,723.89

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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.