Home / 87,960.35-131,940.63-21,400.49

Finding the Fourth Proportional to 87,960.35, 131,940.63 and 21,400.49

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Solution

The fourth proportional to 87,960.35, 131,940.63 and 21,400.49 is: 32,100.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,960.35 : 131,940.63 = 21,400.49 : x
  2. Step 2: Convert to fraction form
    87,960.35/131,940.63 = 21,400.49/x
  3. Step 3: Cross multiply
    87,960.35x = 131,940.63 × 21,400.49
  4. Step 4: Simplify right side
    87,960.35x = 2,823,593,473.21
  5. Step 5: Solve for x
    x = 2,823,593,473.21/87,960.35
  6. Step 6: Final answer
    x = 32,100.75

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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.