Home / 87,666.25-120,979.43-49,940.50

Finding the Fourth Proportional to 87,666.25, 120,979.43 and 49,940.50

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Solution

The fourth proportional to 87,666.25, 120,979.43 and 49,940.50 is: 68,917.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,666.25 : 120,979.43 = 49,940.50 : x
  2. Step 2: Convert to fraction form
    87,666.25/120,979.43 = 49,940.50/x
  3. Step 3: Cross multiply
    87,666.25x = 120,979.43 × 49,940.50
  4. Step 4: Simplify right side
    87,666.25x = 6,041,772,974.21
  5. Step 5: Solve for x
    x = 6,041,772,974.21/87,666.25
  6. Step 6: Final answer
    x = 68,917.89

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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.