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Finding the Fourth Proportional to 75,086.79, 103,578.17 and 48,199.11

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Solution

The fourth proportional to 75,086.79, 103,578.17 and 48,199.11 is: 66,488.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,086.79 : 103,578.17 = 48,199.11 : x
  2. Step 2: Convert to fraction form
    75,086.79/103,578.17 = 48,199.11/x
  3. Step 3: Cross multiply
    75,086.79x = 103,578.17 × 48,199.11
  4. Step 4: Simplify right side
    75,086.79x = 4,992,375,609.43
  5. Step 5: Solve for x
    x = 4,992,375,609.43/75,086.79
  6. Step 6: Final answer
    x = 66,488.07

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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.