Home / 80,589.45-120,884.04-21,425.13

Finding the Fourth Proportional to 80,589.45, 120,884.04 and 21,425.13

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Solution

The fourth proportional to 80,589.45, 120,884.04 and 21,425.13 is: 32,137.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,589.45 : 120,884.04 = 21,425.13 : x
  2. Step 2: Convert to fraction form
    80,589.45/120,884.04 = 21,425.13/x
  3. Step 3: Cross multiply
    80,589.45x = 120,884.04 × 21,425.13
  4. Step 4: Simplify right side
    80,589.45x = 2,589,956,271.93
  5. Step 5: Solve for x
    x = 2,589,956,271.93/80,589.45
  6. Step 6: Final answer
    x = 32,137.66

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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.