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Finding the Fourth Proportional to 66,768.48, 100,149.66 and 22,391.82

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Solution

The fourth proportional to 66,768.48, 100,149.66 and 22,391.82 is: 33,586.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,768.48 : 100,149.66 = 22,391.82 : x
  2. Step 2: Convert to fraction form
    66,768.48/100,149.66 = 22,391.82/x
  3. Step 3: Cross multiply
    66,768.48x = 100,149.66 × 22,391.82
  4. Step 4: Simplify right side
    66,768.48x = 2,242,533,159.78
  5. Step 5: Solve for x
    x = 2,242,533,159.78/66,768.48
  6. Step 6: Final answer
    x = 33,586.70

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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.