Home / 87,530.88-120,778.56-49,805.76

Finding the Fourth Proportional to 87,530.88, 120,778.56 and 49,805.76

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Solution

The fourth proportional to 87,530.88, 120,778.56 and 49,805.76 is: 68,723.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,530.88 : 120,778.56 = 49,805.76 : x
  2. Step 2: Convert to fraction form
    87,530.88/120,778.56 = 49,805.76/x
  3. Step 3: Cross multiply
    87,530.88x = 120,778.56 × 49,805.76
  4. Step 4: Simplify right side
    87,530.88x = 6,015,467,972.51
  5. Step 5: Solve for x
    x = 6,015,467,972.51/87,530.88
  6. Step 6: Final answer
    x = 68,723.95

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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.