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Finding the Fourth Proportional to 68,230.20, 102,345.30 and 30,775.80

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Solution

The fourth proportional to 68,230.20, 102,345.30 and 30,775.80 is: 46,163.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,230.20 : 102,345.30 = 30,775.80 : x
  2. Step 2: Convert to fraction form
    68,230.20/102,345.30 = 30,775.80/x
  3. Step 3: Cross multiply
    68,230.20x = 102,345.30 × 30,775.80
  4. Step 4: Simplify right side
    68,230.20x = 3,149,758,483.74
  5. Step 5: Solve for x
    x = 3,149,758,483.74/68,230.20
  6. Step 6: Final answer
    x = 46,163.70

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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.