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Finding the Fourth Proportional to 92,860, 139,105.52 and 45,969.76

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Solution

The fourth proportional to 92,860, 139,105.52 and 45,969.76 is: 68,863.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,860 : 139,105.52 = 45,969.76 : x
  2. Step 2: Convert to fraction form
    92,860/139,105.52 = 45,969.76/x
  3. Step 3: Cross multiply
    92,860x = 139,105.52 × 45,969.76
  4. Step 4: Simplify right side
    92,860x = 6,394,647,369.08
  5. Step 5: Solve for x
    x = 6,394,647,369.08/92,860
  6. Step 6: Final answer
    x = 68,863.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.