Home / 87,103.12-120,200.16-50,811.52

Finding the Fourth Proportional to 87,103.12, 120,200.16 and 50,811.52

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Solution

The fourth proportional to 87,103.12, 120,200.16 and 50,811.52 is: 70,118.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,103.12 : 120,200.16 = 50,811.52 : x
  2. Step 2: Convert to fraction form
    87,103.12/120,200.16 = 50,811.52/x
  3. Step 3: Cross multiply
    87,103.12x = 120,200.16 × 50,811.52
  4. Step 4: Simplify right side
    87,103.12x = 6,107,552,833.84
  5. Step 5: Solve for x
    x = 6,107,552,833.84/87,103.12
  6. Step 6: Final answer
    x = 70,118.65

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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.