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Finding the Fourth Proportional to 66,134.88, 99,214.47 and 21,764.30

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Solution

The fourth proportional to 66,134.88, 99,214.47 and 21,764.30 is: 32,650.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,134.88 : 99,214.47 = 21,764.30 : x
  2. Step 2: Convert to fraction form
    66,134.88/99,214.47 = 21,764.30/x
  3. Step 3: Cross multiply
    66,134.88x = 99,214.47 × 21,764.30
  4. Step 4: Simplify right side
    66,134.88x = 2,159,332,993.35
  5. Step 5: Solve for x
    x = 2,159,332,993.35/66,134.88
  6. Step 6: Final answer
    x = 32,650.44

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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.