Home / 77,109.13-115,664.49-27,179.92

Finding the Fourth Proportional to 77,109.13, 115,664.49 and 27,179.92

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Solution

The fourth proportional to 77,109.13, 115,664.49 and 27,179.92 is: 40,770.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,109.13 : 115,664.49 = 27,179.92 : x
  2. Step 2: Convert to fraction form
    77,109.13/115,664.49 = 27,179.92/x
  3. Step 3: Cross multiply
    77,109.13x = 115,664.49 × 27,179.92
  4. Step 4: Simplify right side
    77,109.13x = 3,143,751,585.04
  5. Step 5: Solve for x
    x = 3,143,751,585.04/77,109.13
  6. Step 6: Final answer
    x = 40,770.16

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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.