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Finding the Fourth Proportional to 69,054.62, 103,583.28 and 21,668.72

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Solution

The fourth proportional to 69,054.62, 103,583.28 and 21,668.72 is: 32,503.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,054.62 : 103,583.28 = 21,668.72 : x
  2. Step 2: Convert to fraction form
    69,054.62/103,583.28 = 21,668.72/x
  3. Step 3: Cross multiply
    69,054.62x = 103,583.28 × 21,668.72
  4. Step 4: Simplify right side
    69,054.62x = 2,244,517,091.00
  5. Step 5: Solve for x
    x = 2,244,517,091.00/69,054.62
  6. Step 6: Final answer
    x = 32,503.50

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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.