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Finding the Fourth Proportional to 68,413.53, 94,422.95 and 40,819.96

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Solution

The fourth proportional to 68,413.53, 94,422.95 and 40,819.96 is: 56,338.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,413.53 : 94,422.95 = 40,819.96 : x
  2. Step 2: Convert to fraction form
    68,413.53/94,422.95 = 40,819.96/x
  3. Step 3: Cross multiply
    68,413.53x = 94,422.95 × 40,819.96
  4. Step 4: Simplify right side
    68,413.53x = 3,854,340,837.98
  5. Step 5: Solve for x
    x = 3,854,340,837.98/68,413.53
  6. Step 6: Final answer
    x = 56,338.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.