Home / 80,783.73-111,408.95-50,571.79

Finding the Fourth Proportional to 80,783.73, 111,408.95 and 50,571.79

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Solution

The fourth proportional to 80,783.73, 111,408.95 and 50,571.79 is: 69,743.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,783.73 : 111,408.95 = 50,571.79 : x
  2. Step 2: Convert to fraction form
    80,783.73/111,408.95 = 50,571.79/x
  3. Step 3: Cross multiply
    80,783.73x = 111,408.95 × 50,571.79
  4. Step 4: Simplify right side
    80,783.73x = 5,634,149,871.43
  5. Step 5: Solve for x
    x = 5,634,149,871.43/80,783.73
  6. Step 6: Final answer
    x = 69,743.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.