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Finding the Fourth Proportional to 89,704.40, 134,441.40 and 68,824.40

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Solution

The fourth proportional to 89,704.40, 134,441.40 and 68,824.40 is: 103,148.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,704.40 : 134,441.40 = 68,824.40 : x
  2. Step 2: Convert to fraction form
    89,704.40/134,441.40 = 68,824.40/x
  3. Step 3: Cross multiply
    89,704.40x = 134,441.40 × 68,824.40
  4. Step 4: Simplify right side
    89,704.40x = 9,252,848,690.16
  5. Step 5: Solve for x
    x = 9,252,848,690.16/89,704.40
  6. Step 6: Final answer
    x = 103,148.21

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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.