Home / 84,427.08-117,042.24-79,932.78

Finding the Fourth Proportional to 84,427.08, 117,042.24 and 79,932.78

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Solution

The fourth proportional to 84,427.08, 117,042.24 and 79,932.78 is: 110,811.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,427.08 : 117,042.24 = 79,932.78 : x
  2. Step 2: Convert to fraction form
    84,427.08/117,042.24 = 79,932.78/x
  3. Step 3: Cross multiply
    84,427.08x = 117,042.24 × 79,932.78
  4. Step 4: Simplify right side
    84,427.08x = 9,355,511,620.63
  5. Step 5: Solve for x
    x = 9,355,511,620.63/84,427.08
  6. Step 6: Final answer
    x = 110,811.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.