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Finding the Fourth Proportional to 68,104.05, 93,986.64 and 56,754.57

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Solution

The fourth proportional to 68,104.05, 93,986.64 and 56,754.57 is: 78,323.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,104.05 : 93,986.64 = 56,754.57 : x
  2. Step 2: Convert to fraction form
    68,104.05/93,986.64 = 56,754.57/x
  3. Step 3: Cross multiply
    68,104.05x = 93,986.64 × 56,754.57
  4. Step 4: Simplify right side
    68,104.05x = 5,334,171,338.94
  5. Step 5: Solve for x
    x = 5,334,171,338.94/68,104.05
  6. Step 6: Final answer
    x = 78,323.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.