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Finding the Fourth Proportional to 66,551.44, 99,853.08 and 31,520.56

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Solution

The fourth proportional to 66,551.44, 99,853.08 and 31,520.56 is: 47,293.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,551.44 : 99,853.08 = 31,520.56 : x
  2. Step 2: Convert to fraction form
    66,551.44/99,853.08 = 31,520.56/x
  3. Step 3: Cross multiply
    66,551.44x = 99,853.08 × 31,520.56
  4. Step 4: Simplify right side
    66,551.44x = 3,147,424,999.32
  5. Step 5: Solve for x
    x = 3,147,424,999.32/66,551.44
  6. Step 6: Final answer
    x = 47,293.12

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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.