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Finding the Fourth Proportional to 45,453.80, 68,116.70 and 36,109.80

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Solution

The fourth proportional to 45,453.80, 68,116.70 and 36,109.80 is: 54,113.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,453.80 : 68,116.70 = 36,109.80 : x
  2. Step 2: Convert to fraction form
    45,453.80/68,116.70 = 36,109.80/x
  3. Step 3: Cross multiply
    45,453.80x = 68,116.70 × 36,109.80
  4. Step 4: Simplify right side
    45,453.80x = 2,459,680,413.66
  5. Step 5: Solve for x
    x = 2,459,680,413.66/45,453.80
  6. Step 6: Final answer
    x = 54,113.86

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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.