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Finding the Fourth Proportional to 78,917.56, 118,375.14 and 23,513.56

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Solution

The fourth proportional to 78,917.56, 118,375.14 and 23,513.56 is: 35,269.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,917.56 : 118,375.14 = 23,513.56 : x
  2. Step 2: Convert to fraction form
    78,917.56/118,375.14 = 23,513.56/x
  3. Step 3: Cross multiply
    78,917.56x = 118,375.14 × 23,513.56
  4. Step 4: Simplify right side
    78,917.56x = 2,783,420,956.90
  5. Step 5: Solve for x
    x = 2,783,420,956.90/78,917.56
  6. Step 6: Final answer
    x = 35,269.98

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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.