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Finding the Fourth Proportional to 66,647.94, 99,971.90 and 26,684.91

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Solution

The fourth proportional to 66,647.94, 99,971.90 and 26,684.91 is: 40,027.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,647.94 : 99,971.90 = 26,684.91 : x
  2. Step 2: Convert to fraction form
    66,647.94/99,971.90 = 26,684.91/x
  3. Step 3: Cross multiply
    66,647.94x = 99,971.90 × 26,684.91
  4. Step 4: Simplify right side
    66,647.94x = 2,667,741,020.60
  5. Step 5: Solve for x
    x = 2,667,741,020.60/66,647.94
  6. Step 6: Final answer
    x = 40,027.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.