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Finding the Fourth Proportional to 72,942.03, 109,369.29 and 33,449.67

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Solution

The fourth proportional to 72,942.03, 109,369.29 and 33,449.67 is: 50,154.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,942.03 : 109,369.29 = 33,449.67 : x
  2. Step 2: Convert to fraction form
    72,942.03/109,369.29 = 33,449.67/x
  3. Step 3: Cross multiply
    72,942.03x = 109,369.29 × 33,449.67
  4. Step 4: Simplify right side
    72,942.03x = 3,658,366,658.63
  5. Step 5: Solve for x
    x = 3,658,366,658.63/72,942.03
  6. Step 6: Final answer
    x = 50,154.44

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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.