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Finding the Fourth Proportional to 71,396.10, 106,964.55 and 43,661.70

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Solution

The fourth proportional to 71,396.10, 106,964.55 and 43,661.70 is: 65,413.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,396.10 : 106,964.55 = 43,661.70 : x
  2. Step 2: Convert to fraction form
    71,396.10/106,964.55 = 43,661.70/x
  3. Step 3: Cross multiply
    71,396.10x = 106,964.55 × 43,661.70
  4. Step 4: Simplify right side
    71,396.10x = 4,670,254,092.74
  5. Step 5: Solve for x
    x = 4,670,254,092.74/71,396.10
  6. Step 6: Final answer
    x = 65,413.29

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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.