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Finding the Fourth Proportional to 66,425.78, 99,656.90 and 33,105.62

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Solution

The fourth proportional to 66,425.78, 99,656.90 and 33,105.62 is: 49,667.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,425.78 : 99,656.90 = 33,105.62 : x
  2. Step 2: Convert to fraction form
    66,425.78/99,656.90 = 33,105.62/x
  3. Step 3: Cross multiply
    66,425.78x = 99,656.90 × 33,105.62
  4. Step 4: Simplify right side
    66,425.78x = 3,299,203,461.78
  5. Step 5: Solve for x
    x = 3,299,203,461.78/66,425.78
  6. Step 6: Final answer
    x = 49,667.52

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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.