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Finding the Fourth Proportional to 30,147.61, 45,212.85 and 9,081.94

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Solution

The fourth proportional to 30,147.61, 45,212.85 and 9,081.94 is: 13,620.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,147.61 : 45,212.85 = 9,081.94 : x
  2. Step 2: Convert to fraction form
    30,147.61/45,212.85 = 9,081.94/x
  3. Step 3: Cross multiply
    30,147.61x = 45,212.85 × 9,081.94
  4. Step 4: Simplify right side
    30,147.61x = 410,620,390.93
  5. Step 5: Solve for x
    x = 410,620,390.93/30,147.61
  6. Step 6: Final answer
    x = 13,620.33

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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.