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Finding the Fourth Proportional to 68,230.80, 102,327.98 and 20,845.80

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Solution

The fourth proportional to 68,230.80, 102,327.98 and 20,845.80 is: 31,263.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,230.80 : 102,327.98 = 20,845.80 : x
  2. Step 2: Convert to fraction form
    68,230.80/102,327.98 = 20,845.80/x
  3. Step 3: Cross multiply
    68,230.80x = 102,327.98 × 20,845.80
  4. Step 4: Simplify right side
    68,230.80x = 2,133,108,501.26
  5. Step 5: Solve for x
    x = 2,133,108,501.26/68,230.80
  6. Step 6: Final answer
    x = 31,263.13

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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.