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Finding the Fourth Proportional to 64,241.46, 96,372.72 and 19,857.96

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Solution

The fourth proportional to 64,241.46, 96,372.72 and 19,857.96 is: 29,790.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,241.46 : 96,372.72 = 19,857.96 : x
  2. Step 2: Convert to fraction form
    64,241.46/96,372.72 = 19,857.96/x
  3. Step 3: Cross multiply
    64,241.46x = 96,372.72 × 19,857.96
  4. Step 4: Simplify right side
    64,241.46x = 1,913,765,618.85
  5. Step 5: Solve for x
    x = 1,913,765,618.85/64,241.46
  6. Step 6: Final answer
    x = 29,790.19

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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.