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Finding the Fourth Proportional to 66,509.22, 91,783.26 and 36,294.78

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Solution

The fourth proportional to 66,509.22, 91,783.26 and 36,294.78 is: 50,087.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,509.22 : 91,783.26 = 36,294.78 : x
  2. Step 2: Convert to fraction form
    66,509.22/91,783.26 = 36,294.78/x
  3. Step 3: Cross multiply
    66,509.22x = 91,783.26 × 36,294.78
  4. Step 4: Simplify right side
    66,509.22x = 3,331,253,229.38
  5. Step 5: Solve for x
    x = 3,331,253,229.38/66,509.22
  6. Step 6: Final answer
    x = 50,087.09

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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.