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Finding the Fourth Proportional to 89,859.69, 134,872.29 and 45,517.32

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Solution

The fourth proportional to 89,859.69, 134,872.29 and 45,517.32 is: 68,317.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,859.69 : 134,872.29 = 45,517.32 : x
  2. Step 2: Convert to fraction form
    89,859.69/134,872.29 = 45,517.32/x
  3. Step 3: Cross multiply
    89,859.69x = 134,872.29 × 45,517.32
  4. Step 4: Simplify right side
    89,859.69x = 6,139,025,183.06
  5. Step 5: Solve for x
    x = 6,139,025,183.06/89,859.69
  6. Step 6: Final answer
    x = 68,317.90

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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.