Home / 68,380.56-94,369.93-38,171.78

Finding the Fourth Proportional to 68,380.56, 94,369.93 and 38,171.78

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Solution

The fourth proportional to 68,380.56, 94,369.93 and 38,171.78 is: 52,679.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,380.56 : 94,369.93 = 38,171.78 : x
  2. Step 2: Convert to fraction form
    68,380.56/94,369.93 = 38,171.78/x
  3. Step 3: Cross multiply
    68,380.56x = 94,369.93 × 38,171.78
  4. Step 4: Simplify right side
    68,380.56x = 3,602,267,993.18
  5. Step 5: Solve for x
    x = 3,602,267,993.18/68,380.56
  6. Step 6: Final answer
    x = 52,679.71

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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.