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Finding the Fourth Proportional to 69,375.60, 103,917.60 and 57,711.60

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Solution

The fourth proportional to 69,375.60, 103,917.60 and 57,711.60 is: 86,446.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,375.60 : 103,917.60 = 57,711.60 : x
  2. Step 2: Convert to fraction form
    69,375.60/103,917.60 = 57,711.60/x
  3. Step 3: Cross multiply
    69,375.60x = 103,917.60 × 57,711.60
  4. Step 4: Simplify right side
    69,375.60x = 5,997,250,964.16
  5. Step 5: Solve for x
    x = 5,997,250,964.16/69,375.60
  6. Step 6: Final answer
    x = 86,446.11

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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.