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Finding the Fourth Proportional to 66,010.56, 91,072.56 and 39,161.52

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Solution

The fourth proportional to 66,010.56, 91,072.56 and 39,161.52 is: 54,029.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,010.56 : 91,072.56 = 39,161.52 : x
  2. Step 2: Convert to fraction form
    66,010.56/91,072.56 = 39,161.52/x
  3. Step 3: Cross multiply
    66,010.56x = 91,072.56 × 39,161.52
  4. Step 4: Simplify right side
    66,010.56x = 3,566,539,879.89
  5. Step 5: Solve for x
    x = 3,566,539,879.89/66,010.56
  6. Step 6: Final answer
    x = 54,029.84

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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.