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Finding the Fourth Proportional to 68,404.10, 94,413.40 and 40,118.90

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Solution

The fourth proportional to 68,404.10, 94,413.40 and 40,118.90 is: 55,373.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,404.10 : 94,413.40 = 40,118.90 : x
  2. Step 2: Convert to fraction form
    68,404.10/94,413.40 = 40,118.90/x
  3. Step 3: Cross multiply
    68,404.10x = 94,413.40 × 40,118.90
  4. Step 4: Simplify right side
    68,404.10x = 3,787,761,180.90
  5. Step 5: Solve for x
    x = 3,787,761,180.90/68,404.10
  6. Step 6: Final answer
    x = 55,373.31

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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.