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Finding the Fourth Proportional to 30,159, 41,619.33 and 18,220.10

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Solution

The fourth proportional to 30,159, 41,619.33 and 18,220.10 is: 25,143.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,159 : 41,619.33 = 18,220.10 : x
  2. Step 2: Convert to fraction form
    30,159/41,619.33 = 18,220.10/x
  3. Step 3: Cross multiply
    30,159x = 41,619.33 × 18,220.10
  4. Step 4: Simplify right side
    30,159x = 758,308,146.44
  5. Step 5: Solve for x
    x = 758,308,146.44/30,159
  6. Step 6: Final answer
    x = 25,143.68

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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.