Home / 66,939.58-100,425.96-20,192.38

Finding the Fourth Proportional to 66,939.58, 100,425.96 and 20,192.38

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Solution

The fourth proportional to 66,939.58, 100,425.96 and 20,192.38 is: 30,293.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,939.58 : 100,425.96 = 20,192.38 : x
  2. Step 2: Convert to fraction form
    66,939.58/100,425.96 = 20,192.38/x
  3. Step 3: Cross multiply
    66,939.58x = 100,425.96 × 20,192.38
  4. Step 4: Simplify right side
    66,939.58x = 2,027,839,146.18
  5. Step 5: Solve for x
    x = 2,027,839,146.18/66,939.58
  6. Step 6: Final answer
    x = 30,293.57

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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.