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Finding the Fourth Proportional to 86,758.64, 119,724.66 and 47,997.89

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Solution

The fourth proportional to 86,758.64, 119,724.66 and 47,997.89 is: 66,235.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,758.64 : 119,724.66 = 47,997.89 : x
  2. Step 2: Convert to fraction form
    86,758.64/119,724.66 = 47,997.89/x
  3. Step 3: Cross multiply
    86,758.64x = 119,724.66 × 47,997.89
  4. Step 4: Simplify right side
    86,758.64x = 5,746,530,462.34
  5. Step 5: Solve for x
    x = 5,746,530,462.34/86,758.64
  6. Step 6: Final answer
    x = 66,235.83

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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.