Home / 80,431.35-120,623.52-30,475.41

Finding the Fourth Proportional to 80,431.35, 120,623.52 and 30,475.41

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Solution

The fourth proportional to 80,431.35, 120,623.52 and 30,475.41 is: 45,704.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,431.35 : 120,623.52 = 30,475.41 : x
  2. Step 2: Convert to fraction form
    80,431.35/120,623.52 = 30,475.41/x
  3. Step 3: Cross multiply
    80,431.35x = 120,623.52 × 30,475.41
  4. Step 4: Simplify right side
    80,431.35x = 3,676,051,227.64
  5. Step 5: Solve for x
    x = 3,676,051,227.64/80,431.35
  6. Step 6: Final answer
    x = 45,704.21

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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.