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Finding the Fourth Proportional to 64,231.73, 96,356.79 and 19,861.91

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Solution

The fourth proportional to 64,231.73, 96,356.79 and 19,861.91 is: 29,795.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,231.73 : 96,356.79 = 19,861.91 : x
  2. Step 2: Convert to fraction form
    64,231.73/96,356.79 = 19,861.91/x
  3. Step 3: Cross multiply
    64,231.73x = 96,356.79 × 19,861.91
  4. Step 4: Simplify right side
    64,231.73x = 1,913,829,770.42
  5. Step 5: Solve for x
    x = 1,913,829,770.42/64,231.73
  6. Step 6: Final answer
    x = 29,795.70

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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.