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Finding the Fourth Proportional to 68,228.40, 102,245.40 and 50,319.30

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Solution

The fourth proportional to 68,228.40, 102,245.40 and 50,319.30 is: 75,407.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,228.40 : 102,245.40 = 50,319.30 : x
  2. Step 2: Convert to fraction form
    68,228.40/102,245.40 = 50,319.30/x
  3. Step 3: Cross multiply
    68,228.40x = 102,245.40 × 50,319.30
  4. Step 4: Simplify right side
    68,228.40x = 5,144,916,956.22
  5. Step 5: Solve for x
    x = 5,144,916,956.22/68,228.40
  6. Step 6: Final answer
    x = 75,407.26

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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.