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Finding the Fourth Proportional to 78,888.96, 118,245.78 and 60,107.07

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Solution

The fourth proportional to 78,888.96, 118,245.78 and 60,107.07 is: 90,093.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,888.96 : 118,245.78 = 60,107.07 : x
  2. Step 2: Convert to fraction form
    78,888.96/118,245.78 = 60,107.07/x
  3. Step 3: Cross multiply
    78,888.96x = 118,245.78 × 60,107.07
  4. Step 4: Simplify right side
    78,888.96x = 7,107,407,375.66
  5. Step 5: Solve for x
    x = 7,107,407,375.66/78,888.96
  6. Step 6: Final answer
    x = 90,093.82

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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.