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Finding the Fourth Proportional to 79,231.81, 118,848.30 and 20,067.67

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Solution

The fourth proportional to 79,231.81, 118,848.30 and 20,067.67 is: 30,101.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,231.81 : 118,848.30 = 20,067.67 : x
  2. Step 2: Convert to fraction form
    79,231.81/118,848.30 = 20,067.67/x
  3. Step 3: Cross multiply
    79,231.81x = 118,848.30 × 20,067.67
  4. Step 4: Simplify right side
    79,231.81x = 2,385,008,464.46
  5. Step 5: Solve for x
    x = 2,385,008,464.46/79,231.81
  6. Step 6: Final answer
    x = 30,101.65

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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.