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Finding the Fourth Proportional to 64,321.59, 96,491.73 and 19,951.92

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Solution

The fourth proportional to 64,321.59, 96,491.73 and 19,951.92 is: 29,930.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,321.59 : 96,491.73 = 19,951.92 : x
  2. Step 2: Convert to fraction form
    64,321.59/96,491.73 = 19,951.92/x
  3. Step 3: Cross multiply
    64,321.59x = 96,491.73 × 19,951.92
  4. Step 4: Simplify right side
    64,321.59x = 1,925,195,277.62
  5. Step 5: Solve for x
    x = 1,925,195,277.62/64,321.59
  6. Step 6: Final answer
    x = 29,930.78

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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.