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Finding the Fourth Proportional to 87,310.88, 120,467.99 and 50,991.73

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Solution

The fourth proportional to 87,310.88, 120,467.99 and 50,991.73 is: 70,356.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,310.88 : 120,467.99 = 50,991.73 : x
  2. Step 2: Convert to fraction form
    87,310.88/120,467.99 = 50,991.73/x
  3. Step 3: Cross multiply
    87,310.88x = 120,467.99 × 50,991.73
  4. Step 4: Simplify right side
    87,310.88x = 6,142,871,046.03
  5. Step 5: Solve for x
    x = 6,142,871,046.03/87,310.88
  6. Step 6: Final answer
    x = 70,356.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.