Home / 82,138.70-113,351.31-44,412.86

Finding the Fourth Proportional to 82,138.70, 113,351.31 and 44,412.86

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Solution

The fourth proportional to 82,138.70, 113,351.31 and 44,412.86 is: 61,289.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,138.70 : 113,351.31 = 44,412.86 : x
  2. Step 2: Convert to fraction form
    82,138.70/113,351.31 = 44,412.86/x
  3. Step 3: Cross multiply
    82,138.70x = 113,351.31 × 44,412.86
  4. Step 4: Simplify right side
    82,138.70x = 5,034,255,861.85
  5. Step 5: Solve for x
    x = 5,034,255,861.85/82,138.70
  6. Step 6: Final answer
    x = 61,289.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.