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Finding the Fourth Proportional to 87,907.86, 131,859.96 and 21,348.34

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Solution

The fourth proportional to 87,907.86, 131,859.96 and 21,348.34 is: 32,022.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,907.86 : 131,859.96 = 21,348.34 : x
  2. Step 2: Convert to fraction form
    87,907.86/131,859.96 = 21,348.34/x
  3. Step 3: Cross multiply
    87,907.86x = 131,859.96 × 21,348.34
  4. Step 4: Simplify right side
    87,907.86x = 2,814,991,258.47
  5. Step 5: Solve for x
    x = 2,814,991,258.47/87,907.86
  6. Step 6: Final answer
    x = 32,022.07

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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.