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Finding the Fourth Proportional to 68,344.69, 102,520.12 and 20,956.32

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Solution

The fourth proportional to 68,344.69, 102,520.12 and 20,956.32 is: 31,435.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,344.69 : 102,520.12 = 20,956.32 : x
  2. Step 2: Convert to fraction form
    68,344.69/102,520.12 = 20,956.32/x
  3. Step 3: Cross multiply
    68,344.69x = 102,520.12 × 20,956.32
  4. Step 4: Simplify right side
    68,344.69x = 2,148,444,441.16
  5. Step 5: Solve for x
    x = 2,148,444,441.16/68,344.69
  6. Step 6: Final answer
    x = 31,435.43

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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.