Home / 68,345.24-102,520.96-20,956.86

Finding the Fourth Proportional to 68,345.24, 102,520.96 and 20,956.86

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Solution

The fourth proportional to 68,345.24, 102,520.96 and 20,956.86 is: 31,436.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,345.24 : 102,520.96 = 20,956.86 : x
  2. Step 2: Convert to fraction form
    68,345.24/102,520.96 = 20,956.86/x
  3. Step 3: Cross multiply
    68,345.24x = 102,520.96 × 20,956.86
  4. Step 4: Simplify right side
    68,345.24x = 2,148,517,353.39
  5. Step 5: Solve for x
    x = 2,148,517,353.39/68,345.24
  6. Step 6: Final answer
    x = 31,436.24

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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.