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Finding the Fourth Proportional to 68,804.90, 103,440.63 and 54,942.02

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Solution

The fourth proportional to 68,804.90, 103,440.63 and 54,942.02 is: 82,599.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,804.90 : 103,440.63 = 54,942.02 : x
  2. Step 2: Convert to fraction form
    68,804.90/103,440.63 = 54,942.02/x
  3. Step 3: Cross multiply
    68,804.90x = 103,440.63 × 54,942.02
  4. Step 4: Simplify right side
    68,804.90x = 5,683,237,162.27
  5. Step 5: Solve for x
    x = 5,683,237,162.27/68,804.90
  6. Step 6: Final answer
    x = 82,599.31

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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.