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Finding the Fourth Proportional to 68,818.92, 103,141.35 and 39,253.41

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Solution

The fourth proportional to 68,818.92, 103,141.35 and 39,253.41 is: 58,830.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,818.92 : 103,141.35 = 39,253.41 : x
  2. Step 2: Convert to fraction form
    68,818.92/103,141.35 = 39,253.41/x
  3. Step 3: Cross multiply
    68,818.92x = 103,141.35 × 39,253.41
  4. Step 4: Simplify right side
    68,818.92x = 4,048,649,699.50
  5. Step 5: Solve for x
    x = 4,048,649,699.50/68,818.92
  6. Step 6: Final answer
    x = 58,830.48

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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.