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Finding the Fourth Proportional to 66,060.36, 99,062.46 and 21,662.64

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Solution

The fourth proportional to 66,060.36, 99,062.46 and 21,662.64 is: 32,484.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,060.36 : 99,062.46 = 21,662.64 : x
  2. Step 2: Convert to fraction form
    66,060.36/99,062.46 = 21,662.64/x
  3. Step 3: Cross multiply
    66,060.36x = 99,062.46 × 21,662.64
  4. Step 4: Simplify right side
    66,060.36x = 2,145,954,408.49
  5. Step 5: Solve for x
    x = 2,145,954,408.49/66,060.36
  6. Step 6: Final answer
    x = 32,484.75

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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.