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Finding the Fourth Proportional to 66,790.17, 100,137.87 and 33,486.21

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Solution

The fourth proportional to 66,790.17, 100,137.87 and 33,486.21 is: 50,205.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,790.17 : 100,137.87 = 33,486.21 : x
  2. Step 2: Convert to fraction form
    66,790.17/100,137.87 = 33,486.21/x
  3. Step 3: Cross multiply
    66,790.17x = 100,137.87 × 33,486.21
  4. Step 4: Simplify right side
    66,790.17x = 3,353,237,743.77
  5. Step 5: Solve for x
    x = 3,353,237,743.77/66,790.17
  6. Step 6: Final answer
    x = 50,205.56

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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.