Home / 80,122.44-120,190.48-20,958.02

Finding the Fourth Proportional to 80,122.44, 120,190.48 and 20,958.02

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Solution

The fourth proportional to 80,122.44, 120,190.48 and 20,958.02 is: 31,438.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,122.44 : 120,190.48 = 20,958.02 : x
  2. Step 2: Convert to fraction form
    80,122.44/120,190.48 = 20,958.02/x
  3. Step 3: Cross multiply
    80,122.44x = 120,190.48 × 20,958.02
  4. Step 4: Simplify right side
    80,122.44x = 2,518,953,830.30
  5. Step 5: Solve for x
    x = 2,518,953,830.30/80,122.44
  6. Step 6: Final answer
    x = 31,438.81

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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.