Home / 76,940.87-115,462.85-27,021.15

Finding the Fourth Proportional to 76,940.87, 115,462.85 and 27,021.15

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Solution

The fourth proportional to 76,940.87, 115,462.85 and 27,021.15 is: 40,549.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,940.87 : 115,462.85 = 27,021.15 : x
  2. Step 2: Convert to fraction form
    76,940.87/115,462.85 = 27,021.15/x
  3. Step 3: Cross multiply
    76,940.87x = 115,462.85 × 27,021.15
  4. Step 4: Simplify right side
    76,940.87x = 3,119,938,854.17
  5. Step 5: Solve for x
    x = 3,119,938,854.17/76,940.87
  6. Step 6: Final answer
    x = 40,549.83

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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.