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Finding the Fourth Proportional to 66,532.80, 99,653.40 and 35,331.60

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Solution

The fourth proportional to 66,532.80, 99,653.40 and 35,331.60 is: 52,919.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,532.80 : 99,653.40 = 35,331.60 : x
  2. Step 2: Convert to fraction form
    66,532.80/99,653.40 = 35,331.60/x
  3. Step 3: Cross multiply
    66,532.80x = 99,653.40 × 35,331.60
  4. Step 4: Simplify right side
    66,532.80x = 3,520,914,067.44
  5. Step 5: Solve for x
    x = 3,520,914,067.44/66,532.80
  6. Step 6: Final answer
    x = 52,919.97

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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.