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Finding the Fourth Proportional to 66,212.54, 91,373.22 and 35,997.78

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Solution

The fourth proportional to 66,212.54, 91,373.22 and 35,997.78 is: 49,676.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,212.54 : 91,373.22 = 35,997.78 : x
  2. Step 2: Convert to fraction form
    66,212.54/91,373.22 = 35,997.78/x
  3. Step 3: Cross multiply
    66,212.54x = 91,373.22 × 35,997.78
  4. Step 4: Simplify right side
    66,212.54x = 3,289,233,071.45
  5. Step 5: Solve for x
    x = 3,289,233,071.45/66,212.54
  6. Step 6: Final answer
    x = 49,676.89

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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.