Home / 80,529.09-120,793.50-20,557.55

Finding the Fourth Proportional to 80,529.09, 120,793.50 and 20,557.55

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Solution

The fourth proportional to 80,529.09, 120,793.50 and 20,557.55 is: 30,836.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,529.09 : 120,793.50 = 20,557.55 : x
  2. Step 2: Convert to fraction form
    80,529.09/120,793.50 = 20,557.55/x
  3. Step 3: Cross multiply
    80,529.09x = 120,793.50 × 20,557.55
  4. Step 4: Simplify right side
    80,529.09x = 2,483,218,415.93
  5. Step 5: Solve for x
    x = 2,483,218,415.93/80,529.09
  6. Step 6: Final answer
    x = 30,836.29

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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.