Home / 67,180.80-100,736.34-19,789.74

Finding the Fourth Proportional to 67,180.80, 100,736.34 and 19,789.74

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Solution

The fourth proportional to 67,180.80, 100,736.34 and 19,789.74 is: 29,674.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,180.80 : 100,736.34 = 19,789.74 : x
  2. Step 2: Convert to fraction form
    67,180.80/100,736.34 = 19,789.74/x
  3. Step 3: Cross multiply
    67,180.80x = 100,736.34 × 19,789.74
  4. Step 4: Simplify right side
    67,180.80x = 1,993,545,977.15
  5. Step 5: Solve for x
    x = 1,993,545,977.15/67,180.80
  6. Step 6: Final answer
    x = 29,674.34

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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.