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Finding the Fourth Proportional to 66,081.26, 99,132.26 and 21,697.92

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Solution

The fourth proportional to 66,081.26, 99,132.26 and 21,697.92 is: 32,550.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,081.26 : 99,132.26 = 21,697.92 : x
  2. Step 2: Convert to fraction form
    66,081.26/99,132.26 = 21,697.92/x
  3. Step 3: Cross multiply
    66,081.26x = 99,132.26 × 21,697.92
  4. Step 4: Simplify right side
    66,081.26x = 2,150,963,738.41
  5. Step 5: Solve for x
    x = 2,150,963,738.41/66,081.26
  6. Step 6: Final answer
    x = 32,550.28

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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.