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Finding the Fourth Proportional to 65,859.39, 98,804.73 and 21,486.15

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Solution

The fourth proportional to 65,859.39, 98,804.73 and 21,486.15 is: 32,234.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,859.39 : 98,804.73 = 21,486.15 : x
  2. Step 2: Convert to fraction form
    65,859.39/98,804.73 = 21,486.15/x
  3. Step 3: Cross multiply
    65,859.39x = 98,804.73 × 21,486.15
  4. Step 4: Simplify right side
    65,859.39x = 2,122,933,249.49
  5. Step 5: Solve for x
    x = 2,122,933,249.49/65,859.39
  6. Step 6: Final answer
    x = 32,234.33

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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.