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Finding the Fourth Proportional to 67,879.96, 101,779 and 30,433.24

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Solution

The fourth proportional to 67,879.96, 101,779 and 30,433.24 is: 45,631.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,879.96 : 101,779 = 30,433.24 : x
  2. Step 2: Convert to fraction form
    67,879.96/101,779 = 30,433.24/x
  3. Step 3: Cross multiply
    67,879.96x = 101,779 × 30,433.24
  4. Step 4: Simplify right side
    67,879.96x = 3,097,464,733.96
  5. Step 5: Solve for x
    x = 3,097,464,733.96/67,879.96
  6. Step 6: Final answer
    x = 45,631.50

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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.