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Finding the Fourth Proportional to 63,408.45, 95,109.41 and 21,288.86

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Solution

The fourth proportional to 63,408.45, 95,109.41 and 21,288.86 is: 31,932.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,408.45 : 95,109.41 = 21,288.86 : x
  2. Step 2: Convert to fraction form
    63,408.45/95,109.41 = 21,288.86/x
  3. Step 3: Cross multiply
    63,408.45x = 95,109.41 × 21,288.86
  4. Step 4: Simplify right side
    63,408.45x = 2,024,770,332.18
  5. Step 5: Solve for x
    x = 2,024,770,332.18/63,408.45
  6. Step 6: Final answer
    x = 31,932.18

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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.