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Finding the Fourth Proportional to 89,653.64, 134,305.49 and 69,839.42

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Solution

The fourth proportional to 89,653.64, 134,305.49 and 69,839.42 is: 104,622.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,653.64 : 134,305.49 = 69,839.42 : x
  2. Step 2: Convert to fraction form
    89,653.64/134,305.49 = 69,839.42/x
  3. Step 3: Cross multiply
    89,653.64x = 134,305.49 × 69,839.42
  4. Step 4: Simplify right side
    89,653.64x = 9,379,817,027.49
  5. Step 5: Solve for x
    x = 9,379,817,027.49/89,653.64
  6. Step 6: Final answer
    x = 104,622.83

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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.