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Finding the Fourth Proportional to 66,287.79, 99,447.26 and 21,914.54

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Solution

The fourth proportional to 66,287.79, 99,447.26 and 21,914.54 is: 32,876.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,287.79 : 99,447.26 = 21,914.54 : x
  2. Step 2: Convert to fraction form
    66,287.79/99,447.26 = 21,914.54/x
  3. Step 3: Cross multiply
    66,287.79x = 99,447.26 × 21,914.54
  4. Step 4: Simplify right side
    66,287.79x = 2,179,341,096.21
  5. Step 5: Solve for x
    x = 2,179,341,096.21/66,287.79
  6. Step 6: Final answer
    x = 32,876.96

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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.