Home / 77,072.78-115,618.44-27,142.56

Finding the Fourth Proportional to 77,072.78, 115,618.44 and 27,142.56

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Solution

The fourth proportional to 77,072.78, 115,618.44 and 27,142.56 is: 40,717.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,072.78 : 115,618.44 = 27,142.56 : x
  2. Step 2: Convert to fraction form
    77,072.78/115,618.44 = 27,142.56/x
  3. Step 3: Cross multiply
    77,072.78x = 115,618.44 × 27,142.56
  4. Step 4: Simplify right side
    77,072.78x = 3,138,180,444.81
  5. Step 5: Solve for x
    x = 3,138,180,444.81/77,072.78
  6. Step 6: Final answer
    x = 40,717.11

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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.