Home / 87,778.06-131,408.61-54,390.82

Finding the Fourth Proportional to 87,778.06, 131,408.61 and 54,390.82

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Solution

The fourth proportional to 87,778.06, 131,408.61 and 54,390.82 is: 81,426.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,778.06 : 131,408.61 = 54,390.82 : x
  2. Step 2: Convert to fraction form
    87,778.06/131,408.61 = 54,390.82/x
  3. Step 3: Cross multiply
    87,778.06x = 131,408.61 × 54,390.82
  4. Step 4: Simplify right side
    87,778.06x = 7,147,422,052.96
  5. Step 5: Solve for x
    x = 7,147,422,052.96/87,778.06
  6. Step 6: Final answer
    x = 81,426.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.