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Finding the Fourth Proportional to 87,079.92, 120,183.42 and 53,108.12

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Solution

The fourth proportional to 87,079.92, 120,183.42 and 53,108.12 is: 73,297.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,079.92 : 120,183.42 = 53,108.12 : x
  2. Step 2: Convert to fraction form
    87,079.92/120,183.42 = 53,108.12/x
  3. Step 3: Cross multiply
    87,079.92x = 120,183.42 × 53,108.12
  4. Step 4: Simplify right side
    87,079.92x = 6,382,715,491.37
  5. Step 5: Solve for x
    x = 6,382,715,491.37/87,079.92
  6. Step 6: Final answer
    x = 73,297.21

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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.