Home / 83,757.78-115,450.86-68,623.74

Finding the Fourth Proportional to 83,757.78, 115,450.86 and 68,623.74

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Solution

The fourth proportional to 83,757.78, 115,450.86 and 68,623.74 is: 94,590.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,757.78 : 115,450.86 = 68,623.74 : x
  2. Step 2: Convert to fraction form
    83,757.78/115,450.86 = 68,623.74/x
  3. Step 3: Cross multiply
    83,757.78x = 115,450.86 × 68,623.74
  4. Step 4: Simplify right side
    83,757.78x = 7,922,669,799.42
  5. Step 5: Solve for x
    x = 7,922,669,799.42/83,757.78
  6. Step 6: Final answer
    x = 94,590.26

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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.