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Finding the Fourth Proportional to 66,562,791.64, 99,844,187.72 and 18,040,645.50

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Solution

The fourth proportional to 66,562,791.64, 99,844,187.72 and 18,040,645.50 is: 27,060,968.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,562,791.64 : 99,844,187.72 = 18,040,645.50 : x
  2. Step 2: Convert to fraction form
    66,562,791.64/99,844,187.72 = 18,040,645.50/x
  3. Step 3: Cross multiply
    66,562,791.64x = 99,844,187.72 × 18,040,645.50
  4. Step 4: Simplify right side
    66,562,791.64x = 1,801,253,595,891,973.25
  5. Step 5: Solve for x
    x = 1,801,253,595,891,973.25/66,562,791.64
  6. Step 6: Final answer
    x = 27,060,968.32

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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.