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Finding the Fourth Proportional to 66,589.45, 91,889.92 and 36,374.34

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Solution

The fourth proportional to 66,589.45, 91,889.92 and 36,374.34 is: 50,194.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,589.45 : 91,889.92 = 36,374.34 : x
  2. Step 2: Convert to fraction form
    66,589.45/91,889.92 = 36,374.34/x
  3. Step 3: Cross multiply
    66,589.45x = 91,889.92 × 36,374.34
  4. Step 4: Simplify right side
    66,589.45x = 3,342,435,192.65
  5. Step 5: Solve for x
    x = 3,342,435,192.65/66,589.45
  6. Step 6: Final answer
    x = 50,194.67

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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.