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Finding the Fourth Proportional to 68,477.70, 102,716.55 and 45,927.30

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Solution

The fourth proportional to 68,477.70, 102,716.55 and 45,927.30 is: 68,890.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,477.70 : 102,716.55 = 45,927.30 : x
  2. Step 2: Convert to fraction form
    68,477.70/102,716.55 = 45,927.30/x
  3. Step 3: Cross multiply
    68,477.70x = 102,716.55 × 45,927.30
  4. Step 4: Simplify right side
    68,477.70x = 4,717,493,806.82
  5. Step 5: Solve for x
    x = 4,717,493,806.82/68,477.70
  6. Step 6: Final answer
    x = 68,890.95

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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.