Home / 87,087.20-120,185.09-48,858.86

Finding the Fourth Proportional to 87,087.20, 120,185.09 and 48,858.86

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Solution

The fourth proportional to 87,087.20, 120,185.09 and 48,858.86 is: 67,427.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,087.20 : 120,185.09 = 48,858.86 : x
  2. Step 2: Convert to fraction form
    87,087.20/120,185.09 = 48,858.86/x
  3. Step 3: Cross multiply
    87,087.20x = 120,185.09 × 48,858.86
  4. Step 4: Simplify right side
    87,087.20x = 5,872,105,824.40
  5. Step 5: Solve for x
    x = 5,872,105,824.40/87,087.20
  6. Step 6: Final answer
    x = 67,427.89

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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.