Home / 53,311.32-79,879.32-18,231.84

Finding the Fourth Proportional to 53,311.32, 79,879.32 and 18,231.84

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Solution

The fourth proportional to 53,311.32, 79,879.32 and 18,231.84 is: 27,317.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,311.32 : 79,879.32 = 18,231.84 : x
  2. Step 2: Convert to fraction form
    53,311.32/79,879.32 = 18,231.84/x
  3. Step 3: Cross multiply
    53,311.32x = 79,879.32 × 18,231.84
  4. Step 4: Simplify right side
    53,311.32x = 1,456,346,981.55
  5. Step 5: Solve for x
    x = 1,456,346,981.55/53,311.32
  6. Step 6: Final answer
    x = 27,317.78

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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.