Home / 66,193.20-99,293.04-21,819.78

Finding the Fourth Proportional to 66,193.20, 99,293.04 and 21,819.78

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Solution

The fourth proportional to 66,193.20, 99,293.04 and 21,819.78 is: 32,730.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,193.20 : 99,293.04 = 21,819.78 : x
  2. Step 2: Convert to fraction form
    66,193.20/99,293.04 = 21,819.78/x
  3. Step 3: Cross multiply
    66,193.20x = 99,293.04 × 21,819.78
  4. Step 4: Simplify right side
    66,193.20x = 2,166,552,288.33
  5. Step 5: Solve for x
    x = 2,166,552,288.33/66,193.20
  6. Step 6: Final answer
    x = 32,730.74

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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.