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Finding the Fourth Proportional to 86,169.73, 118,912.52 and 47,927.97

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Solution

The fourth proportional to 86,169.73, 118,912.52 and 47,927.97 is: 66,139.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,169.73 : 118,912.52 = 47,927.97 : x
  2. Step 2: Convert to fraction form
    86,169.73/118,912.52 = 47,927.97/x
  3. Step 3: Cross multiply
    86,169.73x = 118,912.52 × 47,927.97
  4. Step 4: Simplify right side
    86,169.73x = 5,699,235,966.78
  5. Step 5: Solve for x
    x = 5,699,235,966.78/86,169.73
  6. Step 6: Final answer
    x = 66,139.65

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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.