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Finding the Fourth Proportional to 66,571.20, 99,885.84 and 35,369.92

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Solution

The fourth proportional to 66,571.20, 99,885.84 and 35,369.92 is: 53,070.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,571.20 : 99,885.84 = 35,369.92 : x
  2. Step 2: Convert to fraction form
    66,571.20/99,885.84 = 35,369.92/x
  3. Step 3: Cross multiply
    66,571.20x = 99,885.84 × 35,369.92
  4. Step 4: Simplify right side
    66,571.20x = 3,532,954,169.93
  5. Step 5: Solve for x
    x = 3,532,954,169.93/66,571.20
  6. Step 6: Final answer
    x = 53,070.31

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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.