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Finding the Fourth Proportional to 68,501.96, 102,739.98 and 21,755.24

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Solution

The fourth proportional to 68,501.96, 102,739.98 and 21,755.24 is: 32,628.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,501.96 : 102,739.98 = 21,755.24 : x
  2. Step 2: Convert to fraction form
    68,501.96/102,739.98 = 21,755.24/x
  3. Step 3: Cross multiply
    68,501.96x = 102,739.98 × 21,755.24
  4. Step 4: Simplify right side
    68,501.96x = 2,235,132,922.50
  5. Step 5: Solve for x
    x = 2,235,132,922.50/68,501.96
  6. Step 6: Final answer
    x = 32,628.74

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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.