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Finding the Fourth Proportional to 87,589.52, 120,874 and 47,845.52

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Solution

The fourth proportional to 87,589.52, 120,874 and 47,845.52 is: 66,027.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,589.52 : 120,874 = 47,845.52 : x
  2. Step 2: Convert to fraction form
    87,589.52/120,874 = 47,845.52/x
  3. Step 3: Cross multiply
    87,589.52x = 120,874 × 47,845.52
  4. Step 4: Simplify right side
    87,589.52x = 5,783,279,384.48
  5. Step 5: Solve for x
    x = 5,783,279,384.48/87,589.52
  6. Step 6: Final answer
    x = 66,027.07

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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.