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Finding the Fourth Proportional to 68,269.91, 102,366.32 and 28,266.30

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Solution

The fourth proportional to 68,269.91, 102,366.32 and 28,266.30 is: 42,383.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,269.91 : 102,366.32 = 28,266.30 : x
  2. Step 2: Convert to fraction form
    68,269.91/102,366.32 = 28,266.30/x
  3. Step 3: Cross multiply
    68,269.91x = 102,366.32 × 28,266.30
  4. Step 4: Simplify right side
    68,269.91x = 2,893,516,969.68
  5. Step 5: Solve for x
    x = 2,893,516,969.68/68,269.91
  6. Step 6: Final answer
    x = 42,383.49

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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.