Home / 71,917,518.20-107,890,274.10-20,801,204.60

Finding the Fourth Proportional to 71,917,518.20, 107,890,274.10 and 20,801,204.60

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Solution

The fourth proportional to 71,917,518.20, 107,890,274.10 and 20,801,204.60 is: 31,205,855.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,917,518.20 : 107,890,274.10 = 20,801,204.60 : x
  2. Step 2: Convert to fraction form
    71,917,518.20/107,890,274.10 = 20,801,204.60/x
  3. Step 3: Cross multiply
    71,917,518.20x = 107,890,274.10 × 20,801,204.60
  4. Step 4: Simplify right side
    71,917,518.20x = 2,244,247,665,904,181
  5. Step 5: Solve for x
    x = 2,244,247,665,904,181/71,917,518.20
  6. Step 6: Final answer
    x = 31,205,855.29

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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.