Home / 77,073.22-115,619.09-27,143

Finding the Fourth Proportional to 77,073.22, 115,619.09 and 27,143

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Solution

The fourth proportional to 77,073.22, 115,619.09 and 27,143 is: 40,717.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,073.22 : 115,619.09 = 27,143 : x
  2. Step 2: Convert to fraction form
    77,073.22/115,619.09 = 27,143/x
  3. Step 3: Cross multiply
    77,073.22x = 115,619.09 × 27,143
  4. Step 4: Simplify right side
    77,073.22x = 3,138,248,959.87
  5. Step 5: Solve for x
    x = 3,138,248,959.87/77,073.22
  6. Step 6: Final answer
    x = 40,717.76

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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.