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Finding the Fourth Proportional to 68,762.56, 103,239.64 and 35,506.60

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Solution

The fourth proportional to 68,762.56, 103,239.64 and 35,506.60 is: 53,309.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,762.56 : 103,239.64 = 35,506.60 : x
  2. Step 2: Convert to fraction form
    68,762.56/103,239.64 = 35,506.60/x
  3. Step 3: Cross multiply
    68,762.56x = 103,239.64 × 35,506.60
  4. Step 4: Simplify right side
    68,762.56x = 3,665,688,601.62
  5. Step 5: Solve for x
    x = 3,665,688,601.62/68,762.56
  6. Step 6: Final answer
    x = 53,309.37

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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.