Home / 80,855.54-121,296.27-34,115.30

Finding the Fourth Proportional to 80,855.54, 121,296.27 and 34,115.30

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Solution

The fourth proportional to 80,855.54, 121,296.27 and 34,115.30 is: 51,178.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,855.54 : 121,296.27 = 34,115.30 : x
  2. Step 2: Convert to fraction form
    80,855.54/121,296.27 = 34,115.30/x
  3. Step 3: Cross multiply
    80,855.54x = 121,296.27 × 34,115.30
  4. Step 4: Simplify right side
    80,855.54x = 4,138,058,639.93
  5. Step 5: Solve for x
    x = 4,138,058,639.93/80,855.54
  6. Step 6: Final answer
    x = 51,178.42

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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.