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Finding the Fourth Proportional to 66,431.78, 99,514.02 and 33,050.60

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Solution

The fourth proportional to 66,431.78, 99,514.02 and 33,050.60 is: 49,509.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,431.78 : 99,514.02 = 33,050.60 : x
  2. Step 2: Convert to fraction form
    66,431.78/99,514.02 = 33,050.60/x
  3. Step 3: Cross multiply
    66,431.78x = 99,514.02 × 33,050.60
  4. Step 4: Simplify right side
    66,431.78x = 3,288,998,069.41
  5. Step 5: Solve for x
    x = 3,288,998,069.41/66,431.78
  6. Step 6: Final answer
    x = 49,509.41

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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.