Home / 80,589.48-120,884.28-30,658.08

Finding the Fourth Proportional to 80,589.48, 120,884.28 and 30,658.08

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Solution

The fourth proportional to 80,589.48, 120,884.28 and 30,658.08 is: 45,987.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,589.48 : 120,884.28 = 30,658.08 : x
  2. Step 2: Convert to fraction form
    80,589.48/120,884.28 = 30,658.08/x
  3. Step 3: Cross multiply
    80,589.48x = 120,884.28 × 30,658.08
  4. Step 4: Simplify right side
    80,589.48x = 3,706,079,926.98
  5. Step 5: Solve for x
    x = 3,706,079,926.98/80,589.48
  6. Step 6: Final answer
    x = 45,987.14

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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.