Home / 87,984.38-131,975.20-21,424.40

Finding the Fourth Proportional to 87,984.38, 131,975.20 and 21,424.40

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Solution

The fourth proportional to 87,984.38, 131,975.20 and 21,424.40 is: 32,136.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,984.38 : 131,975.20 = 21,424.40 : x
  2. Step 2: Convert to fraction form
    87,984.38/131,975.20 = 21,424.40/x
  3. Step 3: Cross multiply
    87,984.38x = 131,975.20 × 21,424.40
  4. Step 4: Simplify right side
    87,984.38x = 2,827,489,276.44
  5. Step 5: Solve for x
    x = 2,827,489,276.44/87,984.38
  6. Step 6: Final answer
    x = 32,136.27

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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.