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Finding the Fourth Proportional to 87,751.76, 131,627.52 and 28,587.33

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Solution

The fourth proportional to 87,751.76, 131,627.52 and 28,587.33 is: 42,880.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,751.76 : 131,627.52 = 28,587.33 : x
  2. Step 2: Convert to fraction form
    87,751.76/131,627.52 = 28,587.33/x
  3. Step 3: Cross multiply
    87,751.76x = 131,627.52 × 28,587.33
  4. Step 4: Simplify right side
    87,751.76x = 3,762,879,351.32
  5. Step 5: Solve for x
    x = 3,762,879,351.32/87,751.76
  6. Step 6: Final answer
    x = 42,880.96

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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.