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Finding the Fourth Proportional to 87,751.52, 131,627.12 and 28,587.12

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Solution

The fourth proportional to 87,751.52, 131,627.12 and 28,587.12 is: 42,880.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,751.52 : 131,627.12 = 28,587.12 : x
  2. Step 2: Convert to fraction form
    87,751.52/131,627.12 = 28,587.12/x
  3. Step 3: Cross multiply
    87,751.52x = 131,627.12 × 28,587.12
  4. Step 4: Simplify right side
    87,751.52x = 3,762,840,274.69
  5. Step 5: Solve for x
    x = 3,762,840,274.69/87,751.52
  6. Step 6: Final answer
    x = 42,880.63

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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.