Home / 66,261.25-99,370.68-21,879.73

Finding the Fourth Proportional to 66,261.25, 99,370.68 and 21,879.73

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Solution

The fourth proportional to 66,261.25, 99,370.68 and 21,879.73 is: 32,812.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,261.25 : 99,370.68 = 21,879.73 : x
  2. Step 2: Convert to fraction form
    66,261.25/99,370.68 = 21,879.73/x
  3. Step 3: Cross multiply
    66,261.25x = 99,370.68 × 21,879.73
  4. Step 4: Simplify right side
    66,261.25x = 2,174,203,538.92
  5. Step 5: Solve for x
    x = 2,174,203,538.92/66,261.25
  6. Step 6: Final answer
    x = 32,812.59

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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.