Home / 80,607,711.20-120,734,336.69-66,616,099.86

Finding the Fourth Proportional to 80,607,711.20, 120,734,336.69 and 66,616,099.86

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Solution

The fourth proportional to 80,607,711.20, 120,734,336.69 and 66,616,099.86 is: 99,777,682.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,607,711.20 : 120,734,336.69 = 66,616,099.86 : x
  2. Step 2: Convert to fraction form
    80,607,711.20/120,734,336.69 = 66,616,099.86/x
  3. Step 3: Cross multiply
    80,607,711.20x = 120,734,336.69 × 66,616,099.86
  4. Step 4: Simplify right side
    80,607,711.20x = 8,042,850,629,138,821
  5. Step 5: Solve for x
    x = 8,042,850,629,138,821/80,607,711.20
  6. Step 6: Final answer
    x = 99,777,682.67

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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.