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Finding the Fourth Proportional to 71,391,859.78, 107,097,322.38 and 28,250,974.12

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Solution

The fourth proportional to 71,391,859.78, 107,097,322.38 and 28,250,974.12 is: 42,380,233.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,391,859.78 : 107,097,322.38 = 28,250,974.12 : x
  2. Step 2: Convert to fraction form
    71,391,859.78/107,097,322.38 = 28,250,974.12/x
  3. Step 3: Cross multiply
    71,391,859.78x = 107,097,322.38 × 28,250,974.12
  4. Step 4: Simplify right side
    71,391,859.78x = 3,025,603,682,878,677
  5. Step 5: Solve for x
    x = 3,025,603,682,878,677/71,391,859.78
  6. Step 6: Final answer
    x = 42,380,233.44

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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.