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Finding the Fourth Proportional to 64,296.21, 96,409.09 and 19,910.64

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Solution

The fourth proportional to 64,296.21, 96,409.09 and 19,910.64 is: 29,855.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,296.21 : 96,409.09 = 19,910.64 : x
  2. Step 2: Convert to fraction form
    64,296.21/96,409.09 = 19,910.64/x
  3. Step 3: Cross multiply
    64,296.21x = 96,409.09 × 19,910.64
  4. Step 4: Simplify right side
    64,296.21x = 1,919,566,958.14
  5. Step 5: Solve for x
    x = 1,919,566,958.14/64,296.21
  6. Step 6: Final answer
    x = 29,855.05

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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.