Home / 87,617.70-120,912.41-47,331.47

Finding the Fourth Proportional to 87,617.70, 120,912.41 and 47,331.47

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Solution

The fourth proportional to 87,617.70, 120,912.41 and 47,331.47 is: 65,317.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,617.70 : 120,912.41 = 47,331.47 : x
  2. Step 2: Convert to fraction form
    87,617.70/120,912.41 = 47,331.47/x
  3. Step 3: Cross multiply
    87,617.70x = 120,912.41 × 47,331.47
  4. Step 4: Simplify right side
    87,617.70x = 5,722,962,527.15
  5. Step 5: Solve for x
    x = 5,722,962,527.15/87,617.70
  6. Step 6: Final answer
    x = 65,317.42

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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.