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Finding the Fourth Proportional to 66,567,081.80, 99,850,622.70 and 43,608,830.60

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Solution

The fourth proportional to 66,567,081.80, 99,850,622.70 and 43,608,830.60 is: 65,413,245.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,567,081.80 : 99,850,622.70 = 43,608,830.60 : x
  2. Step 2: Convert to fraction form
    66,567,081.80/99,850,622.70 = 43,608,830.60/x
  3. Step 3: Cross multiply
    66,567,081.80x = 99,850,622.70 × 43,608,830.60
  4. Step 4: Simplify right side
    66,567,081.80x = 4,354,368,890,628,815
  5. Step 5: Solve for x
    x = 4,354,368,890,628,815/66,567,081.80
  6. Step 6: Final answer
    x = 65,413,245.90

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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.