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Finding the Fourth Proportional to 81,046.59, 111,845.52 and 45,239.32

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Solution

The fourth proportional to 81,046.59, 111,845.52 and 45,239.32 is: 62,430.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,046.59 : 111,845.52 = 45,239.32 : x
  2. Step 2: Convert to fraction form
    81,046.59/111,845.52 = 45,239.32/x
  3. Step 3: Cross multiply
    81,046.59x = 111,845.52 × 45,239.32
  4. Step 4: Simplify right side
    81,046.59x = 5,059,815,409.65
  5. Step 5: Solve for x
    x = 5,059,815,409.65/81,046.59
  6. Step 6: Final answer
    x = 62,430.95

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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.