Home / 83,621.88-115,360.56-49,631.80

Finding the Fourth Proportional to 83,621.88, 115,360.56 and 49,631.80

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Solution

The fourth proportional to 83,621.88, 115,360.56 and 49,631.80 is: 68,469.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,621.88 : 115,360.56 = 49,631.80 : x
  2. Step 2: Convert to fraction form
    83,621.88/115,360.56 = 49,631.80/x
  3. Step 3: Cross multiply
    83,621.88x = 115,360.56 × 49,631.80
  4. Step 4: Simplify right side
    83,621.88x = 5,725,552,241.81
  5. Step 5: Solve for x
    x = 5,725,552,241.81/83,621.88
  6. Step 6: Final answer
    x = 68,469.55

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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.