Home / 78,910.43-118,365.96-19,745.93

Finding the Fourth Proportional to 78,910.43, 118,365.96 and 19,745.93

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Solution

The fourth proportional to 78,910.43, 118,365.96 and 19,745.93 is: 29,618.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,910.43 : 118,365.96 = 19,745.93 : x
  2. Step 2: Convert to fraction form
    78,910.43/118,365.96 = 19,745.93/x
  3. Step 3: Cross multiply
    78,910.43x = 118,365.96 × 19,745.93
  4. Step 4: Simplify right side
    78,910.43x = 2,337,245,960.54
  5. Step 5: Solve for x
    x = 2,337,245,960.54/78,910.43
  6. Step 6: Final answer
    x = 29,618.97

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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.