Home / 87,255.82-120,409.69-53,321.07

Finding the Fourth Proportional to 87,255.82, 120,409.69 and 53,321.07

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Solution

The fourth proportional to 87,255.82, 120,409.69 and 53,321.07 is: 73,581.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,255.82 : 120,409.69 = 53,321.07 : x
  2. Step 2: Convert to fraction form
    87,255.82/120,409.69 = 53,321.07/x
  3. Step 3: Cross multiply
    87,255.82x = 120,409.69 × 53,321.07
  4. Step 4: Simplify right side
    87,255.82x = 6,420,373,242.56
  5. Step 5: Solve for x
    x = 6,420,373,242.56/87,255.82
  6. Step 6: Final answer
    x = 73,581.04

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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.