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Finding the Fourth Proportional to 74,574.64, 111,859.22 and 18,414.30

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Solution

The fourth proportional to 74,574.64, 111,859.22 and 18,414.30 is: 27,620.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,574.64 : 111,859.22 = 18,414.30 : x
  2. Step 2: Convert to fraction form
    74,574.64/111,859.22 = 18,414.30/x
  3. Step 3: Cross multiply
    74,574.64x = 111,859.22 × 18,414.30
  4. Step 4: Simplify right side
    74,574.64x = 2,059,809,234.85
  5. Step 5: Solve for x
    x = 2,059,809,234.85/74,574.64
  6. Step 6: Final answer
    x = 27,620.77

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1.5x scale

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.