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Finding the Fourth Proportional to 68,341.19, 102,500.11 and 18,409.61

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Solution

The fourth proportional to 68,341.19, 102,500.11 and 18,409.61 is: 27,611.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,341.19 : 102,500.11 = 18,409.61 : x
  2. Step 2: Convert to fraction form
    68,341.19/102,500.11 = 18,409.61/x
  3. Step 3: Cross multiply
    68,341.19x = 102,500.11 × 18,409.61
  4. Step 4: Simplify right side
    68,341.19x = 1,886,987,050.06
  5. Step 5: Solve for x
    x = 1,886,987,050.06/68,341.19
  6. Step 6: Final answer
    x = 27,611.27

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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.