Home / 80,943.15-121,524.08-51,418.65

Finding the Fourth Proportional to 80,943.15, 121,524.08 and 51,418.65

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Solution

The fourth proportional to 80,943.15, 121,524.08 and 51,418.65 is: 77,197.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,943.15 : 121,524.08 = 51,418.65 : x
  2. Step 2: Convert to fraction form
    80,943.15/121,524.08 = 51,418.65/x
  3. Step 3: Cross multiply
    80,943.15x = 121,524.08 × 51,418.65
  4. Step 4: Simplify right side
    80,943.15x = 6,248,603,879.00
  5. Step 5: Solve for x
    x = 6,248,603,879.00/80,943.15
  6. Step 6: Final answer
    x = 77,197.44

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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.