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Finding the Fourth Proportional to 66,999.72, 92,460 and 36,786.36

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Solution

The fourth proportional to 66,999.72, 92,460 and 36,786.36 is: 50,765.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,999.72 : 92,460 = 36,786.36 : x
  2. Step 2: Convert to fraction form
    66,999.72/92,460 = 36,786.36/x
  3. Step 3: Cross multiply
    66,999.72x = 92,460 × 36,786.36
  4. Step 4: Simplify right side
    66,999.72x = 3,401,266,845.60
  5. Step 5: Solve for x
    x = 3,401,266,845.60/66,999.72
  6. Step 6: Final answer
    x = 50,765.39

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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.