Home / 279,787.85-419,558.51-80,062.81

Finding the Fourth Proportional to 279,787.85, 419,558.51 and 80,062.81

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Solution

The fourth proportional to 279,787.85, 419,558.51 and 80,062.81 is: 120,058.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,787.85 : 419,558.51 = 80,062.81 : x
  2. Step 2: Convert to fraction form
    279,787.85/419,558.51 = 80,062.81/x
  3. Step 3: Cross multiply
    279,787.85x = 419,558.51 × 80,062.81
  4. Step 4: Simplify right side
    279,787.85x = 33,591,032,421.27
  5. Step 5: Solve for x
    x = 33,591,032,421.27/279,787.85
  6. Step 6: Final answer
    x = 120,058.94

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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.