Home / 87,974.83-121,403.77-49,733.79

Finding the Fourth Proportional to 87,974.83, 121,403.77 and 49,733.79

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Solution

The fourth proportional to 87,974.83, 121,403.77 and 49,733.79 is: 68,631.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,974.83 : 121,403.77 = 49,733.79 : x
  2. Step 2: Convert to fraction form
    87,974.83/121,403.77 = 49,733.79/x
  3. Step 3: Cross multiply
    87,974.83x = 121,403.77 × 49,733.79
  4. Step 4: Simplify right side
    87,974.83x = 6,037,869,602.39
  5. Step 5: Solve for x
    x = 6,037,869,602.39/87,974.83
  6. Step 6: Final answer
    x = 68,631.78

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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.