Home / 80,702.52-121,166.10-41,286.84

Finding the Fourth Proportional to 80,702.52, 121,166.10 and 41,286.84

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Solution

The fourth proportional to 80,702.52, 121,166.10 and 41,286.84 is: 61,987.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,702.52 : 121,166.10 = 41,286.84 : x
  2. Step 2: Convert to fraction form
    80,702.52/121,166.10 = 41,286.84/x
  3. Step 3: Cross multiply
    80,702.52x = 121,166.10 × 41,286.84
  4. Step 4: Simplify right side
    80,702.52x = 5,002,565,384.12
  5. Step 5: Solve for x
    x = 5,002,565,384.12/80,702.52
  6. Step 6: Final answer
    x = 61,987.72

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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.