Home / 80,205.12-120,306.60-38,525.76

Finding the Fourth Proportional to 80,205.12, 120,306.60 and 38,525.76

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Solution

The fourth proportional to 80,205.12, 120,306.60 and 38,525.76 is: 57,788.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,205.12 : 120,306.60 = 38,525.76 : x
  2. Step 2: Convert to fraction form
    80,205.12/120,306.60 = 38,525.76/x
  3. Step 3: Cross multiply
    80,205.12x = 120,306.60 × 38,525.76
  4. Step 4: Simplify right side
    80,205.12x = 4,634,903,198.02
  5. Step 5: Solve for x
    x = 4,634,903,198.02/80,205.12
  6. Step 6: Final answer
    x = 57,788.12

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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.