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Finding the Fourth Proportional to 66,493.58, 99,741.24 and 22,120.34

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Solution

The fourth proportional to 66,493.58, 99,741.24 and 22,120.34 is: 33,180.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,493.58 : 99,741.24 = 22,120.34 : x
  2. Step 2: Convert to fraction form
    66,493.58/99,741.24 = 22,120.34/x
  3. Step 3: Cross multiply
    66,493.58x = 99,741.24 × 22,120.34
  4. Step 4: Simplify right side
    66,493.58x = 2,206,309,642.12
  5. Step 5: Solve for x
    x = 2,206,309,642.12/66,493.58
  6. Step 6: Final answer
    x = 33,180.79

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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.