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Finding the Fourth Proportional to 71,294.46, 106,933.59 and 18,708.05

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Solution

The fourth proportional to 71,294.46, 106,933.59 and 18,708.05 is: 28,059.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,294.46 : 106,933.59 = 18,708.05 : x
  2. Step 2: Convert to fraction form
    71,294.46/106,933.59 = 18,708.05/x
  3. Step 3: Cross multiply
    71,294.46x = 106,933.59 × 18,708.05
  4. Step 4: Simplify right side
    71,294.46x = 2,000,518,413.73
  5. Step 5: Solve for x
    x = 2,000,518,413.73/71,294.46
  6. Step 6: Final answer
    x = 28,059.94

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Why These Related Problems?

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