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Finding the Fourth Proportional to 66,786.48, 100,189.48 and 20,043.04

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Solution

The fourth proportional to 66,786.48, 100,189.48 and 20,043.04 is: 30,067.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,786.48 : 100,189.48 = 20,043.04 : x
  2. Step 2: Convert to fraction form
    66,786.48/100,189.48 = 20,043.04/x
  3. Step 3: Cross multiply
    66,786.48x = 100,189.48 × 20,043.04
  4. Step 4: Simplify right side
    66,786.48x = 2,008,101,755.22
  5. Step 5: Solve for x
    x = 2,008,101,755.22/66,786.48
  6. Step 6: Final answer
    x = 30,067.49

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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.