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Finding the Fourth Proportional to 66,632.64, 99,915 and 22,243.44

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Solution

The fourth proportional to 66,632.64, 99,915 and 22,243.44 is: 33,353.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,632.64 : 99,915 = 22,243.44 : x
  2. Step 2: Convert to fraction form
    66,632.64/99,915 = 22,243.44/x
  3. Step 3: Cross multiply
    66,632.64x = 99,915 × 22,243.44
  4. Step 4: Simplify right side
    66,632.64x = 2,222,453,307.60
  5. Step 5: Solve for x
    x = 2,222,453,307.60/66,632.64
  6. Step 6: Final answer
    x = 33,353.82

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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.