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Finding the Fourth Proportional to 72,950.44, 109,423.50 and 30,251.56

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Solution

The fourth proportional to 72,950.44, 109,423.50 and 30,251.56 is: 45,376.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,950.44 : 109,423.50 = 30,251.56 : x
  2. Step 2: Convert to fraction form
    72,950.44/109,423.50 = 30,251.56/x
  3. Step 3: Cross multiply
    72,950.44x = 109,423.50 × 30,251.56
  4. Step 4: Simplify right side
    72,950.44x = 3,310,231,575.66
  5. Step 5: Solve for x
    x = 3,310,231,575.66/72,950.44
  6. Step 6: Final answer
    x = 45,376.44

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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.