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Finding the Fourth Proportional to 45,955.94, 68,837.04 and 21,016.99

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Solution

The fourth proportional to 45,955.94, 68,837.04 and 21,016.99 is: 31,481.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,955.94 : 68,837.04 = 21,016.99 : x
  2. Step 2: Convert to fraction form
    45,955.94/68,837.04 = 21,016.99/x
  3. Step 3: Cross multiply
    45,955.94x = 68,837.04 × 21,016.99
  4. Step 4: Simplify right side
    45,955.94x = 1,446,747,080.15
  5. Step 5: Solve for x
    x = 1,446,747,080.15/45,955.94
  6. Step 6: Final answer
    x = 31,481.18

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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.