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Finding the Fourth Proportional to 66,704.16, 100,006.56 and 40,402.56

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Solution

The fourth proportional to 66,704.16, 100,006.56 and 40,402.56 is: 60,573.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,704.16 : 100,006.56 = 40,402.56 : x
  2. Step 2: Convert to fraction form
    66,704.16/100,006.56 = 40,402.56/x
  3. Step 3: Cross multiply
    66,704.16x = 100,006.56 × 40,402.56
  4. Step 4: Simplify right side
    66,704.16x = 4,040,521,040.79
  5. Step 5: Solve for x
    x = 4,040,521,040.79/66,704.16
  6. Step 6: Final answer
    x = 60,573.75

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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.