Home / 80,022.31-120,033.55-20,857.93

Finding the Fourth Proportional to 80,022.31, 120,033.55 and 20,857.93

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Solution

The fourth proportional to 80,022.31, 120,033.55 and 20,857.93 is: 31,286.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,022.31 : 120,033.55 = 20,857.93 : x
  2. Step 2: Convert to fraction form
    80,022.31/120,033.55 = 20,857.93/x
  3. Step 3: Cross multiply
    80,022.31x = 120,033.55 × 20,857.93
  4. Step 4: Simplify right side
    80,022.31x = 2,503,651,383.55
  5. Step 5: Solve for x
    x = 2,503,651,383.55/80,022.31
  6. Step 6: Final answer
    x = 31,286.92

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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.