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Finding the Fourth Proportional to 66,761.55, 100,147.77 and 29,316.42

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Solution

The fourth proportional to 66,761.55, 100,147.77 and 29,316.42 is: 43,977.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,761.55 : 100,147.77 = 29,316.42 : x
  2. Step 2: Convert to fraction form
    66,761.55/100,147.77 = 29,316.42/x
  3. Step 3: Cross multiply
    66,761.55x = 100,147.77 × 29,316.42
  4. Step 4: Simplify right side
    66,761.55x = 2,935,974,087.38
  5. Step 5: Solve for x
    x = 2,935,974,087.38/66,761.55
  6. Step 6: Final answer
    x = 43,977.02

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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.