Home / 87,629.50-131,416.41-28,451.50

Finding the Fourth Proportional to 87,629.50, 131,416.41 and 28,451.50

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Solution

The fourth proportional to 87,629.50, 131,416.41 and 28,451.50 is: 42,668.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,629.50 : 131,416.41 = 28,451.50 : x
  2. Step 2: Convert to fraction form
    87,629.50/131,416.41 = 28,451.50/x
  3. Step 3: Cross multiply
    87,629.50x = 131,416.41 × 28,451.50
  4. Step 4: Simplify right side
    87,629.50x = 3,738,993,989.12
  5. Step 5: Solve for x
    x = 3,738,993,989.12/87,629.50
  6. Step 6: Final answer
    x = 42,668.21

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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.