Home / 68,085.22-102,131.08-21,338.50

Finding the Fourth Proportional to 68,085.22, 102,131.08 and 21,338.50

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Solution

The fourth proportional to 68,085.22, 102,131.08 and 21,338.50 is: 32,008.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,085.22 : 102,131.08 = 21,338.50 : x
  2. Step 2: Convert to fraction form
    68,085.22/102,131.08 = 21,338.50/x
  3. Step 3: Cross multiply
    68,085.22x = 102,131.08 × 21,338.50
  4. Step 4: Simplify right side
    68,085.22x = 2,179,324,050.58
  5. Step 5: Solve for x
    x = 2,179,324,050.58/68,085.22
  6. Step 6: Final answer
    x = 32,008.77

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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.