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Finding the Fourth Proportional to 68,072.70, 101,907.45 and 50,619.90

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Solution

The fourth proportional to 68,072.70, 101,907.45 and 50,619.90 is: 75,779.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,072.70 : 101,907.45 = 50,619.90 : x
  2. Step 2: Convert to fraction form
    68,072.70/101,907.45 = 50,619.90/x
  3. Step 3: Cross multiply
    68,072.70x = 101,907.45 × 50,619.90
  4. Step 4: Simplify right side
    68,072.70x = 5,158,544,928.26
  5. Step 5: Solve for x
    x = 5,158,544,928.26/68,072.70
  6. Step 6: Final answer
    x = 75,779.94

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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.