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Finding the Fourth Proportional to 68,285.86, 102,441.11 and 20,900.10

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Solution

The fourth proportional to 68,285.86, 102,441.11 and 20,900.10 is: 31,353.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,285.86 : 102,441.11 = 20,900.10 : x
  2. Step 2: Convert to fraction form
    68,285.86/102,441.11 = 20,900.10/x
  3. Step 3: Cross multiply
    68,285.86x = 102,441.11 × 20,900.10
  4. Step 4: Simplify right side
    68,285.86x = 2,141,029,111.21
  5. Step 5: Solve for x
    x = 2,141,029,111.21/68,285.86
  6. Step 6: Final answer
    x = 31,353.92

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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.