Home / 66,771.42-92,144.39-39,912.62

Finding the Fourth Proportional to 66,771.42, 92,144.39 and 39,912.62

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Solution

The fourth proportional to 66,771.42, 92,144.39 and 39,912.62 is: 55,079.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,771.42 : 92,144.39 = 39,912.62 : x
  2. Step 2: Convert to fraction form
    66,771.42/92,144.39 = 39,912.62/x
  3. Step 3: Cross multiply
    66,771.42x = 92,144.39 × 39,912.62
  4. Step 4: Simplify right side
    66,771.42x = 3,677,724,023.20
  5. Step 5: Solve for x
    x = 3,677,724,023.20/66,771.42
  6. Step 6: Final answer
    x = 55,079.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.