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Finding the Fourth Proportional to 71,101.97, 106,670.50 and 21,181.87

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Solution

The fourth proportional to 71,101.97, 106,670.50 and 21,181.87 is: 31,778.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,101.97 : 106,670.50 = 21,181.87 : x
  2. Step 2: Convert to fraction form
    71,101.97/106,670.50 = 21,181.87/x
  3. Step 3: Cross multiply
    71,101.97x = 106,670.50 × 21,181.87
  4. Step 4: Simplify right side
    71,101.97x = 2,259,480,863.37
  5. Step 5: Solve for x
    x = 2,259,480,863.37/71,101.97
  6. Step 6: Final answer
    x = 31,778.04

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