Home / 83,623.88-115,363.32-49,633.80

Finding the Fourth Proportional to 83,623.88, 115,363.32 and 49,633.80

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Solution

The fourth proportional to 83,623.88, 115,363.32 and 49,633.80 is: 68,472.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,623.88 : 115,363.32 = 49,633.80 : x
  2. Step 2: Convert to fraction form
    83,623.88/115,363.32 = 49,633.80/x
  3. Step 3: Cross multiply
    83,623.88x = 115,363.32 × 49,633.80
  4. Step 4: Simplify right side
    83,623.88x = 5,725,919,952.22
  5. Step 5: Solve for x
    x = 5,725,919,952.22/83,623.88
  6. Step 6: Final answer
    x = 68,472.31

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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.