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Finding the Fourth Proportional to 68,651.22, 102,782.70 and 43,629.24

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Solution

The fourth proportional to 68,651.22, 102,782.70 and 43,629.24 is: 65,320.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,651.22 : 102,782.70 = 43,629.24 : x
  2. Step 2: Convert to fraction form
    68,651.22/102,782.70 = 43,629.24/x
  3. Step 3: Cross multiply
    68,651.22x = 102,782.70 × 43,629.24
  4. Step 4: Simplify right side
    68,651.22x = 4,484,331,086.15
  5. Step 5: Solve for x
    x = 4,484,331,086.15/68,651.22
  6. Step 6: Final answer
    x = 65,320.49

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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.