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Finding the Fourth Proportional to 93,286.80, 139,878.90 and 63,738

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Solution

The fourth proportional to 93,286.80, 139,878.90 and 63,738 is: 95,571.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,286.80 : 139,878.90 = 63,738 : x
  2. Step 2: Convert to fraction form
    93,286.80/139,878.90 = 63,738/x
  3. Step 3: Cross multiply
    93,286.80x = 139,878.90 × 63,738
  4. Step 4: Simplify right side
    93,286.80x = 8,915,601,328.20
  5. Step 5: Solve for x
    x = 8,915,601,328.20/93,286.80
  6. Step 6: Final answer
    x = 95,571.95

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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.