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Finding the Fourth Proportional to 68,005.67, 102,008.34 and 18,085.77

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Solution

The fourth proportional to 68,005.67, 102,008.34 and 18,085.77 is: 27,128.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,005.67 : 102,008.34 = 18,085.77 : x
  2. Step 2: Convert to fraction form
    68,005.67/102,008.34 = 18,085.77/x
  3. Step 3: Cross multiply
    68,005.67x = 102,008.34 × 18,085.77
  4. Step 4: Simplify right side
    68,005.67x = 1,844,899,375.32
  5. Step 5: Solve for x
    x = 1,844,899,375.32/68,005.67
  6. Step 6: Final answer
    x = 27,128.61

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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.