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Finding the Fourth Proportional to 68,130, 94,032.36 and 38,322

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Solution

The fourth proportional to 68,130, 94,032.36 and 38,322 is: 52,891.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,130 : 94,032.36 = 38,322 : x
  2. Step 2: Convert to fraction form
    68,130/94,032.36 = 38,322/x
  3. Step 3: Cross multiply
    68,130x = 94,032.36 × 38,322
  4. Step 4: Simplify right side
    68,130x = 3,603,508,099.92
  5. Step 5: Solve for x
    x = 3,603,508,099.92/68,130
  6. Step 6: Final answer
    x = 52,891.65

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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.