Home / 71,781.36-107,663.83-19,194.94

Finding the Fourth Proportional to 71,781.36, 107,663.83 and 19,194.94

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Solution

The fourth proportional to 71,781.36, 107,663.83 and 19,194.94 is: 28,790.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,781.36 : 107,663.83 = 19,194.94 : x
  2. Step 2: Convert to fraction form
    71,781.36/107,663.83 = 19,194.94/x
  3. Step 3: Cross multiply
    71,781.36x = 107,663.83 × 19,194.94
  4. Step 4: Simplify right side
    71,781.36x = 2,066,600,843.61
  5. Step 5: Solve for x
    x = 2,066,600,843.61/71,781.36
  6. Step 6: Final answer
    x = 28,790.22

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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.