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Finding the Fourth Proportional to 87,980.54, 131,957.44 and 28,814.90

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Solution

The fourth proportional to 87,980.54, 131,957.44 and 28,814.90 is: 43,217.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,980.54 : 131,957.44 = 28,814.90 : x
  2. Step 2: Convert to fraction form
    87,980.54/131,957.44 = 28,814.90/x
  3. Step 3: Cross multiply
    87,980.54x = 131,957.44 × 28,814.90
  4. Step 4: Simplify right side
    87,980.54x = 3,802,339,706.03
  5. Step 5: Solve for x
    x = 3,802,339,706.03/87,980.54
  6. Step 6: Final answer
    x = 43,217.97

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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.