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Finding the Fourth Proportional to 69,516.32, 104,270.40 and 42,867.44

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Solution

The fourth proportional to 69,516.32, 104,270.40 and 42,867.44 is: 64,298.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,516.32 : 104,270.40 = 42,867.44 : x
  2. Step 2: Convert to fraction form
    69,516.32/104,270.40 = 42,867.44/x
  3. Step 3: Cross multiply
    69,516.32x = 104,270.40 × 42,867.44
  4. Step 4: Simplify right side
    69,516.32x = 4,469,805,115.78
  5. Step 5: Solve for x
    x = 4,469,805,115.78/69,516.32
  6. Step 6: Final answer
    x = 64,298.64

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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.