Home / 87,136.10-120,247.80-49,410.26

Finding the Fourth Proportional to 87,136.10, 120,247.80 and 49,410.26

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Solution

The fourth proportional to 87,136.10, 120,247.80 and 49,410.26 is: 68,186.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,136.10 : 120,247.80 = 49,410.26 : x
  2. Step 2: Convert to fraction form
    87,136.10/120,247.80 = 49,410.26/x
  3. Step 3: Cross multiply
    87,136.10x = 120,247.80 × 49,410.26
  4. Step 4: Simplify right side
    87,136.10x = 5,941,475,062.43
  5. Step 5: Solve for x
    x = 5,941,475,062.43/87,136.10
  6. Step 6: Final answer
    x = 68,186.15

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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.