Home / 68,054.23-102,081.35-21,310.75

Finding the Fourth Proportional to 68,054.23, 102,081.35 and 21,310.75

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Solution

The fourth proportional to 68,054.23, 102,081.35 and 21,310.75 is: 31,966.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,054.23 : 102,081.35 = 21,310.75 : x
  2. Step 2: Convert to fraction form
    68,054.23/102,081.35 = 21,310.75/x
  3. Step 3: Cross multiply
    68,054.23x = 102,081.35 × 21,310.75
  4. Step 4: Simplify right side
    68,054.23x = 2,175,430,129.51
  5. Step 5: Solve for x
    x = 2,175,430,129.51/68,054.23
  6. Step 6: Final answer
    x = 31,966.13

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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.