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Finding the Fourth Proportional to 68,718.30, 103,070.96 and 21,958.62

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Solution

The fourth proportional to 68,718.30, 103,070.96 and 21,958.62 is: 32,935.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,718.30 : 103,070.96 = 21,958.62 : x
  2. Step 2: Convert to fraction form
    68,718.30/103,070.96 = 21,958.62/x
  3. Step 3: Cross multiply
    68,718.30x = 103,070.96 × 21,958.62
  4. Step 4: Simplify right side
    68,718.30x = 2,263,296,043.68
  5. Step 5: Solve for x
    x = 2,263,296,043.68/68,718.30
  6. Step 6: Final answer
    x = 32,935.86

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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.