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Finding the Fourth Proportional to 68,655.92, 94,745.40 and 38,442.56

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Solution

The fourth proportional to 68,655.92, 94,745.40 and 38,442.56 is: 53,050.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,655.92 : 94,745.40 = 38,442.56 : x
  2. Step 2: Convert to fraction form
    68,655.92/94,745.40 = 38,442.56/x
  3. Step 3: Cross multiply
    68,655.92x = 94,745.40 × 38,442.56
  4. Step 4: Simplify right side
    68,655.92x = 3,642,255,724.22
  5. Step 5: Solve for x
    x = 3,642,255,724.22/68,655.92
  6. Step 6: Final answer
    x = 53,050.86

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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.