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Finding the Fourth Proportional to 74,183.80, 111,254.10 and 40,919.80

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Solution

The fourth proportional to 74,183.80, 111,254.10 and 40,919.80 is: 61,367.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,183.80 : 111,254.10 = 40,919.80 : x
  2. Step 2: Convert to fraction form
    74,183.80/111,254.10 = 40,919.80/x
  3. Step 3: Cross multiply
    74,183.80x = 111,254.10 × 40,919.80
  4. Step 4: Simplify right side
    74,183.80x = 4,552,495,521.18
  5. Step 5: Solve for x
    x = 4,552,495,521.18/74,183.80
  6. Step 6: Final answer
    x = 61,367.79

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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.