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Finding the Fourth Proportional to 66,676.34, 99,964.56 and 40,374.56

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Solution

The fourth proportional to 66,676.34, 99,964.56 and 40,374.56 is: 60,531.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,676.34 : 99,964.56 = 40,374.56 : x
  2. Step 2: Convert to fraction form
    66,676.34/99,964.56 = 40,374.56/x
  3. Step 3: Cross multiply
    66,676.34x = 99,964.56 × 40,374.56
  4. Step 4: Simplify right side
    66,676.34x = 4,036,025,125.59
  5. Step 5: Solve for x
    x = 4,036,025,125.59/66,676.34
  6. Step 6: Final answer
    x = 60,531.59

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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.