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Finding the Fourth Proportional to 80,979.54, 111,751.71 and 45,169.54

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Solution

The fourth proportional to 80,979.54, 111,751.71 and 45,169.54 is: 62,333.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,979.54 : 111,751.71 = 45,169.54 : x
  2. Step 2: Convert to fraction form
    80,979.54/111,751.71 = 45,169.54/x
  3. Step 3: Cross multiply
    80,979.54x = 111,751.71 × 45,169.54
  4. Step 4: Simplify right side
    80,979.54x = 5,047,773,334.91
  5. Step 5: Solve for x
    x = 5,047,773,334.91/80,979.54
  6. Step 6: Final answer
    x = 62,333.93

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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.