Home / 86,839.74-119,861.37-49,135.86

Finding the Fourth Proportional to 86,839.74, 119,861.37 and 49,135.86

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Solution

The fourth proportional to 86,839.74, 119,861.37 and 49,135.86 is: 67,820.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,839.74 : 119,861.37 = 49,135.86 : x
  2. Step 2: Convert to fraction form
    86,839.74/119,861.37 = 49,135.86/x
  3. Step 3: Cross multiply
    86,839.74x = 119,861.37 × 49,135.86
  4. Step 4: Simplify right side
    86,839.74x = 5,889,491,495.73
  5. Step 5: Solve for x
    x = 5,889,491,495.73/86,839.74
  6. Step 6: Final answer
    x = 67,820.23

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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.