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Finding the Fourth Proportional to 66,054.53, 99,081.80 and 21,669.37

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Solution

The fourth proportional to 66,054.53, 99,081.80 and 21,669.37 is: 32,504.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,054.53 : 99,081.80 = 21,669.37 : x
  2. Step 2: Convert to fraction form
    66,054.53/99,081.80 = 21,669.37/x
  3. Step 3: Cross multiply
    66,054.53x = 99,081.80 × 21,669.37
  4. Step 4: Simplify right side
    66,054.53x = 2,147,040,184.47
  5. Step 5: Solve for x
    x = 2,147,040,184.47/66,054.53
  6. Step 6: Final answer
    x = 32,504.06

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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.