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Finding the Fourth Proportional to 69,920.73, 104,793.53 and 55,071

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Solution

The fourth proportional to 69,920.73, 104,793.53 and 55,071 is: 82,537.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,920.73 : 104,793.53 = 55,071 : x
  2. Step 2: Convert to fraction form
    69,920.73/104,793.53 = 55,071/x
  3. Step 3: Cross multiply
    69,920.73x = 104,793.53 × 55,071
  4. Step 4: Simplify right side
    69,920.73x = 5,771,084,215.28
  5. Step 5: Solve for x
    x = 5,771,084,215.28/69,920.73
  6. Step 6: Final answer
    x = 82,537.53

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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.