Home / 66,120.27-91,245.22-37,439.11

Finding the Fourth Proportional to 66,120.27, 91,245.22 and 37,439.11

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Solution

The fourth proportional to 66,120.27, 91,245.22 and 37,439.11 is: 51,665.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,120.27 : 91,245.22 = 37,439.11 : x
  2. Step 2: Convert to fraction form
    66,120.27/91,245.22 = 37,439.11/x
  3. Step 3: Cross multiply
    66,120.27x = 91,245.22 × 37,439.11
  4. Step 4: Simplify right side
    66,120.27x = 3,416,139,828.55
  5. Step 5: Solve for x
    x = 3,416,139,828.55/66,120.27
  6. Step 6: Final answer
    x = 51,665.55

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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.