Home / 80,621.70-120,926.07-28,023.54

Finding the Fourth Proportional to 80,621.70, 120,926.07 and 28,023.54

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Solution

The fourth proportional to 80,621.70, 120,926.07 and 28,023.54 is: 42,033.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,621.70 : 120,926.07 = 28,023.54 : x
  2. Step 2: Convert to fraction form
    80,621.70/120,926.07 = 28,023.54/x
  3. Step 3: Cross multiply
    80,621.70x = 120,926.07 × 28,023.54
  4. Step 4: Simplify right side
    80,621.70x = 3,388,776,559.69
  5. Step 5: Solve for x
    x = 3,388,776,559.69/80,621.70
  6. Step 6: Final answer
    x = 42,033.06

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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.