Home / 80,537.42-120,758.27-30,621.17

Finding the Fourth Proportional to 80,537.42, 120,758.27 and 30,621.17

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Solution

The fourth proportional to 80,537.42, 120,758.27 and 30,621.17 is: 45,913.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,537.42 : 120,758.27 = 30,621.17 : x
  2. Step 2: Convert to fraction form
    80,537.42/120,758.27 = 30,621.17/x
  3. Step 3: Cross multiply
    80,537.42x = 120,758.27 × 30,621.17
  4. Step 4: Simplify right side
    80,537.42x = 3,697,758,757.68
  5. Step 5: Solve for x
    x = 3,697,758,757.68/80,537.42
  6. Step 6: Final answer
    x = 45,913.55

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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.