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Finding the Fourth Proportional to 87,652, 131,412.39 and 28,452.34

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Solution

The fourth proportional to 87,652, 131,412.39 and 28,452.34 is: 42,657.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,652 : 131,412.39 = 28,452.34 : x
  2. Step 2: Convert to fraction form
    87,652/131,412.39 = 28,452.34/x
  3. Step 3: Cross multiply
    87,652x = 131,412.39 × 28,452.34
  4. Step 4: Simplify right side
    87,652x = 3,738,990,000.49
  5. Step 5: Solve for x
    x = 3,738,990,000.49/87,652
  6. Step 6: Final answer
    x = 42,657.21

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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.