Home / 80,745,212.80-121,117,819.20-42,003,163.90

Finding the Fourth Proportional to 80,745,212.80, 121,117,819.20 and 42,003,163.90

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Solution

The fourth proportional to 80,745,212.80, 121,117,819.20 and 42,003,163.90 is: 63,004,745.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,745,212.80 : 121,117,819.20 = 42,003,163.90 : x
  2. Step 2: Convert to fraction form
    80,745,212.80/121,117,819.20 = 42,003,163.90/x
  3. Step 3: Cross multiply
    80,745,212.80x = 121,117,819.20 × 42,003,163.90
  4. Step 4: Simplify right side
    80,745,212.80x = 5,087,331,611,068,167
  5. Step 5: Solve for x
    x = 5,087,331,611,068,167/80,745,212.80
  6. Step 6: Final answer
    x = 63,004,745.85

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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.