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Finding the Fourth Proportional to 68,856.21, 103,328.01 and 29,413.62

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Solution

The fourth proportional to 68,856.21, 103,328.01 and 29,413.62 is: 44,139.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,856.21 : 103,328.01 = 29,413.62 : x
  2. Step 2: Convert to fraction form
    68,856.21/103,328.01 = 29,413.62/x
  3. Step 3: Cross multiply
    68,856.21x = 103,328.01 × 29,413.62
  4. Step 4: Simplify right side
    68,856.21x = 3,039,250,821.50
  5. Step 5: Solve for x
    x = 3,039,250,821.50/68,856.21
  6. Step 6: Final answer
    x = 44,139.10

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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.