Home / 49,518.20-74,278.38-12,078.54

Finding the Fourth Proportional to 49,518.20, 74,278.38 and 12,078.54

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Solution

The fourth proportional to 49,518.20, 74,278.38 and 12,078.54 is: 18,118.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,518.20 : 74,278.38 = 12,078.54 : x
  2. Step 2: Convert to fraction form
    49,518.20/74,278.38 = 12,078.54/x
  3. Step 3: Cross multiply
    49,518.20x = 74,278.38 × 12,078.54
  4. Step 4: Simplify right side
    49,518.20x = 897,174,383.97
  5. Step 5: Solve for x
    x = 897,174,383.97/49,518.20
  6. Step 6: Final answer
    x = 18,118.07

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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.