Home / 77,109.44-115,673.40-27,179.21

Finding the Fourth Proportional to 77,109.44, 115,673.40 and 27,179.21

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Solution

The fourth proportional to 77,109.44, 115,673.40 and 27,179.21 is: 40,772.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,109.44 : 115,673.40 = 27,179.21 : x
  2. Step 2: Convert to fraction form
    77,109.44/115,673.40 = 27,179.21/x
  3. Step 3: Cross multiply
    77,109.44x = 115,673.40 × 27,179.21
  4. Step 4: Simplify right side
    77,109.44x = 3,143,911,919.20
  5. Step 5: Solve for x
    x = 3,143,911,919.20/77,109.44
  6. Step 6: Final answer
    x = 40,772.08

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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.