Home / 87,668.42-120,989.84-49,435.34

Finding the Fourth Proportional to 87,668.42, 120,989.84 and 49,435.34

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Solution

The fourth proportional to 87,668.42, 120,989.84 and 49,435.34 is: 68,224.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,668.42 : 120,989.84 = 49,435.34 : x
  2. Step 2: Convert to fraction form
    87,668.42/120,989.84 = 49,435.34/x
  3. Step 3: Cross multiply
    87,668.42x = 120,989.84 × 49,435.34
  4. Step 4: Simplify right side
    87,668.42x = 5,981,173,024.82
  5. Step 5: Solve for x
    x = 5,981,173,024.82/87,668.42
  6. Step 6: Final answer
    x = 68,224.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.