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Finding the Fourth Proportional to 30,278.62, 41,790.63 and 17,707.42

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Solution

The fourth proportional to 30,278.62, 41,790.63 and 17,707.42 is: 24,439.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,278.62 : 41,790.63 = 17,707.42 : x
  2. Step 2: Convert to fraction form
    30,278.62/41,790.63 = 17,707.42/x
  3. Step 3: Cross multiply
    30,278.62x = 41,790.63 × 17,707.42
  4. Step 4: Simplify right side
    30,278.62x = 740,004,237.47
  5. Step 5: Solve for x
    x = 740,004,237.47/30,278.62
  6. Step 6: Final answer
    x = 24,439.83

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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.