Home / 80,982.52-121,514.81-54,631.91

Finding the Fourth Proportional to 80,982.52, 121,514.81 and 54,631.91

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Solution

The fourth proportional to 80,982.52, 121,514.81 and 54,631.91 is: 81,975.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,982.52 : 121,514.81 = 54,631.91 : x
  2. Step 2: Convert to fraction form
    80,982.52/121,514.81 = 54,631.91/x
  3. Step 3: Cross multiply
    80,982.52x = 121,514.81 × 54,631.91
  4. Step 4: Simplify right side
    80,982.52x = 6,638,586,194.21
  5. Step 5: Solve for x
    x = 6,638,586,194.21/80,982.52
  6. Step 6: Final answer
    x = 81,975.55

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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.