Home / 87,940.36-131,908.71-21,380.84

Finding the Fourth Proportional to 87,940.36, 131,908.71 and 21,380.84

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Solution

The fourth proportional to 87,940.36, 131,908.71 and 21,380.84 is: 32,070.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,940.36 : 131,908.71 = 21,380.84 : x
  2. Step 2: Convert to fraction form
    87,940.36/131,908.71 = 21,380.84/x
  3. Step 3: Cross multiply
    87,940.36x = 131,908.71 × 21,380.84
  4. Step 4: Simplify right side
    87,940.36x = 2,820,318,363.57
  5. Step 5: Solve for x
    x = 2,820,318,363.57/87,940.36
  6. Step 6: Final answer
    x = 32,070.81

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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.