Home / 87,408.35-120,589.35-49,159.12

Finding the Fourth Proportional to 87,408.35, 120,589.35 and 49,159.12

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Solution

The fourth proportional to 87,408.35, 120,589.35 and 49,159.12 is: 67,820.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,408.35 : 120,589.35 = 49,159.12 : x
  2. Step 2: Convert to fraction form
    87,408.35/120,589.35 = 49,159.12/x
  3. Step 3: Cross multiply
    87,408.35x = 120,589.35 × 49,159.12
  4. Step 4: Simplify right side
    87,408.35x = 5,928,066,025.90
  5. Step 5: Solve for x
    x = 5,928,066,025.90/87,408.35
  6. Step 6: Final answer
    x = 67,820.37

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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.