Home / 80,563.32-120,845.03-30,631.87

Finding the Fourth Proportional to 80,563.32, 120,845.03 and 30,631.87

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Solution

The fourth proportional to 80,563.32, 120,845.03 and 30,631.87 is: 45,947.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,563.32 : 120,845.03 = 30,631.87 : x
  2. Step 2: Convert to fraction form
    80,563.32/120,845.03 = 30,631.87/x
  3. Step 3: Cross multiply
    80,563.32x = 120,845.03 × 30,631.87
  4. Step 4: Simplify right side
    80,563.32x = 3,701,709,249.11
  5. Step 5: Solve for x
    x = 3,701,709,249.11/80,563.32
  6. Step 6: Final answer
    x = 45,947.82

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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.