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Finding the Fourth Proportional to 86,379.86, 119,212.89 and 52,387.22

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Solution

The fourth proportional to 86,379.86, 119,212.89 and 52,387.22 is: 72,299.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,379.86 : 119,212.89 = 52,387.22 : x
  2. Step 2: Convert to fraction form
    86,379.86/119,212.89 = 52,387.22/x
  3. Step 3: Cross multiply
    86,379.86x = 119,212.89 × 52,387.22
  4. Step 4: Simplify right side
    86,379.86x = 6,245,231,895.27
  5. Step 5: Solve for x
    x = 6,245,231,895.27/86,379.86
  6. Step 6: Final answer
    x = 72,299.63

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1.5x scale

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.