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Finding the Fourth Proportional to 86,395.50, 119,231.91 and 48,669.75

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Solution

The fourth proportional to 86,395.50, 119,231.91 and 48,669.75 is: 67,167.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,395.50 : 119,231.91 = 48,669.75 : x
  2. Step 2: Convert to fraction form
    86,395.50/119,231.91 = 48,669.75/x
  3. Step 3: Cross multiply
    86,395.50x = 119,231.91 × 48,669.75
  4. Step 4: Simplify right side
    86,395.50x = 5,802,987,251.72
  5. Step 5: Solve for x
    x = 5,802,987,251.72/86,395.50
  6. Step 6: Final answer
    x = 67,167.70

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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.