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Finding the Fourth Proportional to 68,393.73, 94,403.19 and 39,719.88

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Solution

The fourth proportional to 68,393.73, 94,403.19 and 39,719.88 is: 54,824.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,393.73 : 94,403.19 = 39,719.88 : x
  2. Step 2: Convert to fraction form
    68,393.73/94,403.19 = 39,719.88/x
  3. Step 3: Cross multiply
    68,393.73x = 94,403.19 × 39,719.88
  4. Step 4: Simplify right side
    68,393.73x = 3,749,683,038.43
  5. Step 5: Solve for x
    x = 3,749,683,038.43/68,393.73
  6. Step 6: Final answer
    x = 54,824.96

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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.