Home / 54,997.20-82,518.12-19,939.68

Finding the Fourth Proportional to 54,997.20, 82,518.12 and 19,939.68

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Solution

The fourth proportional to 54,997.20, 82,518.12 and 19,939.68 is: 29,917.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,997.20 : 82,518.12 = 19,939.68 : x
  2. Step 2: Convert to fraction form
    54,997.20/82,518.12 = 19,939.68/x
  3. Step 3: Cross multiply
    54,997.20x = 82,518.12 × 19,939.68
  4. Step 4: Simplify right side
    54,997.20x = 1,645,384,907.00
  5. Step 5: Solve for x
    x = 1,645,384,907.00/54,997.20
  6. Step 6: Final answer
    x = 29,917.61

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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.