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Finding the Fourth Proportional to 73,081.80, 100,874.43 and 42,873.66

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Solution

The fourth proportional to 73,081.80, 100,874.43 and 42,873.66 is: 59,178.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,081.80 : 100,874.43 = 42,873.66 : x
  2. Step 2: Convert to fraction form
    73,081.80/100,874.43 = 42,873.66/x
  3. Step 3: Cross multiply
    73,081.80x = 100,874.43 × 42,873.66
  4. Step 4: Simplify right side
    73,081.80x = 4,324,856,014.51
  5. Step 5: Solve for x
    x = 4,324,856,014.51/73,081.80
  6. Step 6: Final answer
    x = 59,178.29

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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.