Home / 68,083.22-102,128.08-21,336.50

Finding the Fourth Proportional to 68,083.22, 102,128.08 and 21,336.50

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Solution

The fourth proportional to 68,083.22, 102,128.08 and 21,336.50 is: 32,005.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,083.22 : 102,128.08 = 21,336.50 : x
  2. Step 2: Convert to fraction form
    68,083.22/102,128.08 = 21,336.50/x
  3. Step 3: Cross multiply
    68,083.22x = 102,128.08 × 21,336.50
  4. Step 4: Simplify right side
    68,083.22x = 2,179,055,778.92
  5. Step 5: Solve for x
    x = 2,179,055,778.92/68,083.22
  6. Step 6: Final answer
    x = 32,005.77

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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.