Home / 87,815.45-131,722.63-28,651.16

Finding the Fourth Proportional to 87,815.45, 131,722.63 and 28,651.16

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Solution

The fourth proportional to 87,815.45, 131,722.63 and 28,651.16 is: 42,976.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,815.45 : 131,722.63 = 28,651.16 : x
  2. Step 2: Convert to fraction form
    87,815.45/131,722.63 = 28,651.16/x
  3. Step 3: Cross multiply
    87,815.45x = 131,722.63 × 28,651.16
  4. Step 4: Simplify right side
    87,815.45x = 3,774,006,147.75
  5. Step 5: Solve for x
    x = 3,774,006,147.75/87,815.45
  6. Step 6: Final answer
    x = 42,976.56

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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.