Home / 76,780.92-115,098.59-26,828.55

Finding the Fourth Proportional to 76,780.92, 115,098.59 and 26,828.55

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Solution

The fourth proportional to 76,780.92, 115,098.59 and 26,828.55 is: 40,217.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,780.92 : 115,098.59 = 26,828.55 : x
  2. Step 2: Convert to fraction form
    76,780.92/115,098.59 = 26,828.55/x
  3. Step 3: Cross multiply
    76,780.92x = 115,098.59 × 26,828.55
  4. Step 4: Simplify right side
    76,780.92x = 3,087,928,142.60
  5. Step 5: Solve for x
    x = 3,087,928,142.60/76,780.92
  6. Step 6: Final answer
    x = 40,217.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.