Home / 87,634.78-131,399.63-40,190.45

Finding the Fourth Proportional to 87,634.78, 131,399.63 and 40,190.45

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Solution

The fourth proportional to 87,634.78, 131,399.63 and 40,190.45 is: 60,261.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,634.78 : 131,399.63 = 40,190.45 : x
  2. Step 2: Convert to fraction form
    87,634.78/131,399.63 = 40,190.45/x
  3. Step 3: Cross multiply
    87,634.78x = 131,399.63 × 40,190.45
  4. Step 4: Simplify right side
    87,634.78x = 5,281,009,778.37
  5. Step 5: Solve for x
    x = 5,281,009,778.37/87,634.78
  6. Step 6: Final answer
    x = 60,261.58

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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.