Home / 54,521.70-81,786.60-19,456.80

Finding the Fourth Proportional to 54,521.70, 81,786.60 and 19,456.80

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Solution

The fourth proportional to 54,521.70, 81,786.60 and 19,456.80 is: 29,186.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,521.70 : 81,786.60 = 19,456.80 : x
  2. Step 2: Convert to fraction form
    54,521.70/81,786.60 = 19,456.80/x
  3. Step 3: Cross multiply
    54,521.70x = 81,786.60 × 19,456.80
  4. Step 4: Simplify right side
    54,521.70x = 1,591,305,518.88
  5. Step 5: Solve for x
    x = 1,591,305,518.88/54,521.70
  6. Step 6: Final answer
    x = 29,186.65

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1.5x scale

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.