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Finding the Fourth Proportional to 80,614.78, 120,942.66 and 47,362.96

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Solution

The fourth proportional to 80,614.78, 120,942.66 and 47,362.96 is: 71,056.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,614.78 : 120,942.66 = 47,362.96 : x
  2. Step 2: Convert to fraction form
    80,614.78/120,942.66 = 47,362.96/x
  3. Step 3: Cross multiply
    80,614.78x = 120,942.66 × 47,362.96
  4. Step 4: Simplify right side
    80,614.78x = 5,728,202,367.87
  5. Step 5: Solve for x
    x = 5,728,202,367.87/80,614.78
  6. Step 6: Final answer
    x = 71,056.48

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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.