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Finding the Fourth Proportional to 43.12, 59.35 and 36.19

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Solution

The fourth proportional to 43.12, 59.35 and 36.19 is: 49.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    43.12 : 59.35 = 36.19 : x
  2. Step 2: Convert to fraction form
    43.12/59.35 = 36.19/x
  3. Step 3: Cross multiply
    43.12x = 59.35 × 36.19
  4. Step 4: Simplify right side
    43.12x = 2,147.88
  5. Step 5: Solve for x
    x = 2,147.88/43.12
  6. Step 6: Final answer
    x = 49.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.