Home / 78,945.30-108,942.66-43,135.44

Finding the Fourth Proportional to 78,945.30, 108,942.66 and 43,135.44

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Solution

The fourth proportional to 78,945.30, 108,942.66 and 43,135.44 is: 59,525.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,945.30 : 108,942.66 = 43,135.44 : x
  2. Step 2: Convert to fraction form
    78,945.30/108,942.66 = 43,135.44/x
  3. Step 3: Cross multiply
    78,945.30x = 108,942.66 × 43,135.44
  4. Step 4: Simplify right side
    78,945.30x = 4,699,289,573.87
  5. Step 5: Solve for x
    x = 4,699,289,573.87/78,945.30
  6. Step 6: Final answer
    x = 59,525.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.