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Finding the Fourth Proportional to 86,508, 119,388.33 and 48,789.54

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Solution

The fourth proportional to 86,508, 119,388.33 and 48,789.54 is: 67,333.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,508 : 119,388.33 = 48,789.54 : x
  2. Step 2: Convert to fraction form
    86,508/119,388.33 = 48,789.54/x
  3. Step 3: Cross multiply
    86,508x = 119,388.33 × 48,789.54
  4. Step 4: Simplify right side
    86,508x = 5,824,901,702.07
  5. Step 5: Solve for x
    x = 5,824,901,702.07/86,508
  6. Step 6: Final answer
    x = 67,333.68

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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.