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Finding the Fourth Proportional to 69,107.60, 103,661.40 and 34,115.60

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Solution

The fourth proportional to 69,107.60, 103,661.40 and 34,115.60 is: 51,173.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,107.60 : 103,661.40 = 34,115.60 : x
  2. Step 2: Convert to fraction form
    69,107.60/103,661.40 = 34,115.60/x
  3. Step 3: Cross multiply
    69,107.60x = 103,661.40 × 34,115.60
  4. Step 4: Simplify right side
    69,107.60x = 3,536,470,857.84
  5. Step 5: Solve for x
    x = 3,536,470,857.84/69,107.60
  6. Step 6: Final answer
    x = 51,173.40

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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.