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Finding the Fourth Proportional to 68,047.68, 93,918.15 and 39,363.96

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Solution

The fourth proportional to 68,047.68, 93,918.15 and 39,363.96 is: 54,329.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,047.68 : 93,918.15 = 39,363.96 : x
  2. Step 2: Convert to fraction form
    68,047.68/93,918.15 = 39,363.96/x
  3. Step 3: Cross multiply
    68,047.68x = 93,918.15 × 39,363.96
  4. Step 4: Simplify right side
    68,047.68x = 3,696,990,299.87
  5. Step 5: Solve for x
    x = 3,696,990,299.87/68,047.68
  6. Step 6: Final answer
    x = 54,329.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.