Home / 82,879.12-114,330.64-54,215.60

Finding the Fourth Proportional to 82,879.12, 114,330.64 and 54,215.60

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Solution

The fourth proportional to 82,879.12, 114,330.64 and 54,215.60 is: 74,789.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,879.12 : 114,330.64 = 54,215.60 : x
  2. Step 2: Convert to fraction form
    82,879.12/114,330.64 = 54,215.60/x
  3. Step 3: Cross multiply
    82,879.12x = 114,330.64 × 54,215.60
  4. Step 4: Simplify right side
    82,879.12x = 6,198,504,245.98
  5. Step 5: Solve for x
    x = 6,198,504,245.98/82,879.12
  6. Step 6: Final answer
    x = 74,789.70

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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.