Home / 75,117.82-103,662.62-41,128.51

Finding the Fourth Proportional to 75,117.82, 103,662.62 and 41,128.51

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Solution

The fourth proportional to 75,117.82, 103,662.62 and 41,128.51 is: 56,757.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,117.82 : 103,662.62 = 41,128.51 : x
  2. Step 2: Convert to fraction form
    75,117.82/103,662.62 = 41,128.51/x
  3. Step 3: Cross multiply
    75,117.82x = 103,662.62 × 41,128.51
  4. Step 4: Simplify right side
    75,117.82x = 4,263,489,103.30
  5. Step 5: Solve for x
    x = 4,263,489,103.30/75,117.82
  6. Step 6: Final answer
    x = 56,757.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.