Home / 80,268.60-120,438.90-27,715.80

Finding the Fourth Proportional to 80,268.60, 120,438.90 and 27,715.80

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Solution

The fourth proportional to 80,268.60, 120,438.90 and 27,715.80 is: 41,586.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,268.60 : 120,438.90 = 27,715.80 : x
  2. Step 2: Convert to fraction form
    80,268.60/120,438.90 = 27,715.80/x
  3. Step 3: Cross multiply
    80,268.60x = 120,438.90 × 27,715.80
  4. Step 4: Simplify right side
    80,268.60x = 3,338,060,464.62
  5. Step 5: Solve for x
    x = 3,338,060,464.62/80,268.60
  6. Step 6: Final answer
    x = 41,586.13

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1.5x scale

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.