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Finding the Fourth Proportional to 68,350.96, 102,491.32 and 30,890.76

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Solution

The fourth proportional to 68,350.96, 102,491.32 and 30,890.76 is: 46,320.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,350.96 : 102,491.32 = 30,890.76 : x
  2. Step 2: Convert to fraction form
    68,350.96/102,491.32 = 30,890.76/x
  3. Step 3: Cross multiply
    68,350.96x = 102,491.32 × 30,890.76
  4. Step 4: Simplify right side
    68,350.96x = 3,166,034,768.20
  5. Step 5: Solve for x
    x = 3,166,034,768.20/68,350.96
  6. Step 6: Final answer
    x = 46,320.27

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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.