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Finding the Fourth Proportional to 86,858, 119,864.08 and 49,131.44

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Solution

The fourth proportional to 86,858, 119,864.08 and 49,131.44 is: 67,801.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,858 : 119,864.08 = 49,131.44 : x
  2. Step 2: Convert to fraction form
    86,858/119,864.08 = 49,131.44/x
  3. Step 3: Cross multiply
    86,858x = 119,864.08 × 49,131.44
  4. Step 4: Simplify right side
    86,858x = 5,889,094,854.68
  5. Step 5: Solve for x
    x = 5,889,094,854.68/86,858
  6. Step 6: Final answer
    x = 67,801.41

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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.