Home / 80,231.72-120,347.24-20,260.31

Finding the Fourth Proportional to 80,231.72, 120,347.24 and 20,260.31

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Solution

The fourth proportional to 80,231.72, 120,347.24 and 20,260.31 is: 30,390.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,231.72 : 120,347.24 = 20,260.31 : x
  2. Step 2: Convert to fraction form
    80,231.72/120,347.24 = 20,260.31/x
  3. Step 3: Cross multiply
    80,231.72x = 120,347.24 × 20,260.31
  4. Step 4: Simplify right side
    80,231.72x = 2,438,271,687.01
  5. Step 5: Solve for x
    x = 2,438,271,687.01/80,231.72
  6. Step 6: Final answer
    x = 30,390.37

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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.