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Finding the Fourth Proportional to 66,289.78, 91,481.84 and 36,077.05

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Solution

The fourth proportional to 66,289.78, 91,481.84 and 36,077.05 is: 49,787.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,289.78 : 91,481.84 = 36,077.05 : x
  2. Step 2: Convert to fraction form
    66,289.78/91,481.84 = 36,077.05/x
  3. Step 3: Cross multiply
    66,289.78x = 91,481.84 × 36,077.05
  4. Step 4: Simplify right side
    66,289.78x = 3,300,394,915.77
  5. Step 5: Solve for x
    x = 3,300,394,915.77/66,289.78
  6. Step 6: Final answer
    x = 49,787.39

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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.