Home / 66,774.27-100,171.33-19,389.78

Finding the Fourth Proportional to 66,774.27, 100,171.33 and 19,389.78

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Solution

The fourth proportional to 66,774.27, 100,171.33 and 19,389.78 is: 29,087.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,774.27 : 100,171.33 = 19,389.78 : x
  2. Step 2: Convert to fraction form
    66,774.27/100,171.33 = 19,389.78/x
  3. Step 3: Cross multiply
    66,774.27x = 100,171.33 × 19,389.78
  4. Step 4: Simplify right side
    66,774.27x = 1,942,299,453.20
  5. Step 5: Solve for x
    x = 1,942,299,453.20/66,774.27
  6. Step 6: Final answer
    x = 29,087.54

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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.