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Finding the Fourth Proportional to 68,014.80, 102,022.20 and 49,206.60

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Solution

The fourth proportional to 68,014.80, 102,022.20 and 49,206.60 is: 73,809.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,014.80 : 102,022.20 = 49,206.60 : x
  2. Step 2: Convert to fraction form
    68,014.80/102,022.20 = 49,206.60/x
  3. Step 3: Cross multiply
    68,014.80x = 102,022.20 × 49,206.60
  4. Step 4: Simplify right side
    68,014.80x = 5,020,165,586.52
  5. Step 5: Solve for x
    x = 5,020,165,586.52/68,014.80
  6. Step 6: Final answer
    x = 73,809.90

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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.