Home / 51,379.83-77,071.32-13,939.75

Finding the Fourth Proportional to 51,379.83, 77,071.32 and 13,939.75

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Solution

The fourth proportional to 51,379.83, 77,071.32 and 13,939.75 is: 20,910.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,379.83 : 77,071.32 = 13,939.75 : x
  2. Step 2: Convert to fraction form
    51,379.83/77,071.32 = 13,939.75/x
  3. Step 3: Cross multiply
    51,379.83x = 77,071.32 × 13,939.75
  4. Step 4: Simplify right side
    51,379.83x = 1,074,354,932.97
  5. Step 5: Solve for x
    x = 1,074,354,932.97/51,379.83
  6. Step 6: Final answer
    x = 20,910.05

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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.