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Finding the Fourth Proportional to 68,379.99, 102,371.36 and 39,829.89

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Solution

The fourth proportional to 68,379.99, 102,371.36 and 39,829.89 is: 59,629.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,379.99 : 102,371.36 = 39,829.89 : x
  2. Step 2: Convert to fraction form
    68,379.99/102,371.36 = 39,829.89/x
  3. Step 3: Cross multiply
    68,379.99x = 102,371.36 × 39,829.89
  4. Step 4: Simplify right side
    68,379.99x = 4,077,439,808.80
  5. Step 5: Solve for x
    x = 4,077,439,808.80/68,379.99
  6. Step 6: Final answer
    x = 59,629.14

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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.