Home / 87,965.73-121,391.40-49,723.94

Finding the Fourth Proportional to 87,965.73, 121,391.40 and 49,723.94

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Solution

The fourth proportional to 87,965.73, 121,391.40 and 49,723.94 is: 68,618.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,965.73 : 121,391.40 = 49,723.94 : x
  2. Step 2: Convert to fraction form
    87,965.73/121,391.40 = 49,723.94/x
  3. Step 3: Cross multiply
    87,965.73x = 121,391.40 × 49,723.94
  4. Step 4: Simplify right side
    87,965.73x = 6,036,057,834.54
  5. Step 5: Solve for x
    x = 6,036,057,834.54/87,965.73
  6. Step 6: Final answer
    x = 68,618.29

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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.