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Finding the Fourth Proportional to 66,375.73, 99,526.69 and 21,978.27

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Solution

The fourth proportional to 66,375.73, 99,526.69 and 21,978.27 is: 32,955.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,375.73 : 99,526.69 = 21,978.27 : x
  2. Step 2: Convert to fraction form
    66,375.73/99,526.69 = 21,978.27/x
  3. Step 3: Cross multiply
    66,375.73x = 99,526.69 × 21,978.27
  4. Step 4: Simplify right side
    66,375.73x = 2,187,424,078.06
  5. Step 5: Solve for x
    x = 2,187,424,078.06/66,375.73
  6. Step 6: Final answer
    x = 32,955.18

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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.