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Finding the Fourth Proportional to 68,863.52, 103,281.68 and 18,930.74

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Solution

The fourth proportional to 68,863.52, 103,281.68 and 18,930.74 is: 28,392.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,863.52 : 103,281.68 = 18,930.74 : x
  2. Step 2: Convert to fraction form
    68,863.52/103,281.68 = 18,930.74/x
  3. Step 3: Cross multiply
    68,863.52x = 103,281.68 × 18,930.74
  4. Step 4: Simplify right side
    68,863.52x = 1,955,198,161.76
  5. Step 5: Solve for x
    x = 1,955,198,161.76/68,863.52
  6. Step 6: Final answer
    x = 28,392.36

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1.5x scale

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.