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Finding the Fourth Proportional to 79,249.66, 118,873.29 and 19,278.70

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Solution

The fourth proportional to 79,249.66, 118,873.29 and 19,278.70 is: 28,917.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,249.66 : 118,873.29 = 19,278.70 : x
  2. Step 2: Convert to fraction form
    79,249.66/118,873.29 = 19,278.70/x
  3. Step 3: Cross multiply
    79,249.66x = 118,873.29 × 19,278.70
  4. Step 4: Simplify right side
    79,249.66x = 2,291,722,495.92
  5. Step 5: Solve for x
    x = 2,291,722,495.92/79,249.66
  6. Step 6: Final answer
    x = 28,917.76

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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.