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Finding the Fourth Proportional to 86,704.01, 119,659.74 and 54,443.94

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Solution

The fourth proportional to 86,704.01, 119,659.74 and 54,443.94 is: 75,137.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,704.01 : 119,659.74 = 54,443.94 : x
  2. Step 2: Convert to fraction form
    86,704.01/119,659.74 = 54,443.94/x
  3. Step 3: Cross multiply
    86,704.01x = 119,659.74 × 54,443.94
  4. Step 4: Simplify right side
    86,704.01x = 6,514,747,704.98
  5. Step 5: Solve for x
    x = 6,514,747,704.98/86,704.01
  6. Step 6: Final answer
    x = 75,137.79

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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.