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Finding the Fourth Proportional to 80,614.85, 120,922.23 and 28,024.31

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Solution

The fourth proportional to 80,614.85, 120,922.23 and 28,024.31 is: 42,036.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,614.85 : 120,922.23 = 28,024.31 : x
  2. Step 2: Convert to fraction form
    80,614.85/120,922.23 = 28,024.31/x
  3. Step 3: Cross multiply
    80,614.85x = 120,922.23 × 28,024.31
  4. Step 4: Simplify right side
    80,614.85x = 3,388,762,466.81
  5. Step 5: Solve for x
    x = 3,388,762,466.81/80,614.85
  6. Step 6: Final answer
    x = 42,036.46

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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.