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Finding the Fourth Proportional to 66,958.41, 100,399.53 and 51,755.59

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Solution

The fourth proportional to 66,958.41, 100,399.53 and 51,755.59 is: 77,603.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,958.41 : 100,399.53 = 51,755.59 : x
  2. Step 2: Convert to fraction form
    66,958.41/100,399.53 = 51,755.59/x
  3. Step 3: Cross multiply
    66,958.41x = 100,399.53 × 51,755.59
  4. Step 4: Simplify right side
    66,958.41x = 5,196,236,374.58
  5. Step 5: Solve for x
    x = 5,196,236,374.58/66,958.41
  6. Step 6: Final answer
    x = 77,603.94

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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.