Home / 8,139,621.20-12,209,431.80-3,888,093.20

Finding the Fourth Proportional to 8,139,621.20, 12,209,431.80 and 3,888,093.20

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Solution

The fourth proportional to 8,139,621.20, 12,209,431.80 and 3,888,093.20 is: 5,832,139.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,139,621.20 : 12,209,431.80 = 3,888,093.20 : x
  2. Step 2: Convert to fraction form
    8,139,621.20/12,209,431.80 = 3,888,093.20/x
  3. Step 3: Cross multiply
    8,139,621.20x = 12,209,431.80 × 3,888,093.20
  4. Step 4: Simplify right side
    8,139,621.20x = 47,471,408,757,443.77
  5. Step 5: Solve for x
    x = 47,471,408,757,443.77/8,139,621.20
  6. Step 6: Final answer
    x = 5,832,139.80

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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.