Home / 80,979.09-111,702.15-52,253.79

Finding the Fourth Proportional to 80,979.09, 111,702.15 and 52,253.79

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Solution

The fourth proportional to 80,979.09, 111,702.15 and 52,253.79 is: 72,078.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,979.09 : 111,702.15 = 52,253.79 : x
  2. Step 2: Convert to fraction form
    80,979.09/111,702.15 = 52,253.79/x
  3. Step 3: Cross multiply
    80,979.09x = 111,702.15 × 52,253.79
  4. Step 4: Simplify right side
    80,979.09x = 5,836,860,688.65
  5. Step 5: Solve for x
    x = 5,836,860,688.65/80,979.09
  6. Step 6: Final answer
    x = 72,078.62

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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.