Home / 76,178.82-114,236.64-28,785.72

Finding the Fourth Proportional to 76,178.82, 114,236.64 and 28,785.72

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Solution

The fourth proportional to 76,178.82, 114,236.64 and 28,785.72 is: 43,166.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,178.82 : 114,236.64 = 28,785.72 : x
  2. Step 2: Convert to fraction form
    76,178.82/114,236.64 = 28,785.72/x
  3. Step 3: Cross multiply
    76,178.82x = 114,236.64 × 28,785.72
  4. Step 4: Simplify right side
    76,178.82x = 3,288,383,932.78
  5. Step 5: Solve for x
    x = 3,288,383,932.78/76,178.82
  6. Step 6: Final answer
    x = 43,166.64

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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.