Home / 80,428.85-120,651.47-27,838.18

Finding the Fourth Proportional to 80,428.85, 120,651.47 and 27,838.18

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Solution

The fourth proportional to 80,428.85, 120,651.47 and 27,838.18 is: 41,760.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,428.85 : 120,651.47 = 27,838.18 : x
  2. Step 2: Convert to fraction form
    80,428.85/120,651.47 = 27,838.18/x
  3. Step 3: Cross multiply
    80,428.85x = 120,651.47 × 27,838.18
  4. Step 4: Simplify right side
    80,428.85x = 3,358,717,339.12
  5. Step 5: Solve for x
    x = 3,358,717,339.12/80,428.85
  6. Step 6: Final answer
    x = 41,760.11

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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.