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Finding the Fourth Proportional to 68,275.85, 102,413.30 and 18,351.77

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Solution

The fourth proportional to 68,275.85, 102,413.30 and 18,351.77 is: 27,527.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,275.85 : 102,413.30 = 18,351.77 : x
  2. Step 2: Convert to fraction form
    68,275.85/102,413.30 = 18,351.77/x
  3. Step 3: Cross multiply
    68,275.85x = 102,413.30 × 18,351.77
  4. Step 4: Simplify right side
    68,275.85x = 1,879,464,722.72
  5. Step 5: Solve for x
    x = 1,879,464,722.72/68,275.85
  6. Step 6: Final answer
    x = 27,527.52

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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.