Home / 77,140.34-115,724.22-27,249.38

Finding the Fourth Proportional to 77,140.34, 115,724.22 and 27,249.38

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Solution

The fourth proportional to 77,140.34, 115,724.22 and 27,249.38 is: 40,878.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,140.34 : 115,724.22 = 27,249.38 : x
  2. Step 2: Convert to fraction form
    77,140.34/115,724.22 = 27,249.38/x
  3. Step 3: Cross multiply
    77,140.34x = 115,724.22 × 27,249.38
  4. Step 4: Simplify right side
    77,140.34x = 3,153,413,245.98
  5. Step 5: Solve for x
    x = 3,153,413,245.98/77,140.34
  6. Step 6: Final answer
    x = 40,878.91

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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.