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Finding the Fourth Proportional to 30,181.76, 41,639.40 and 22,242.92

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Solution

The fourth proportional to 30,181.76, 41,639.40 and 22,242.92 is: 30,686.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,181.76 : 41,639.40 = 22,242.92 : x
  2. Step 2: Convert to fraction form
    30,181.76/41,639.40 = 22,242.92/x
  3. Step 3: Cross multiply
    30,181.76x = 41,639.40 × 22,242.92
  4. Step 4: Simplify right side
    30,181.76x = 926,181,843.05
  5. Step 5: Solve for x
    x = 926,181,843.05/30,181.76
  6. Step 6: Final answer
    x = 30,686.81

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.