Home / 66,120.38-91,245.83-35,905.45

Finding the Fourth Proportional to 66,120.38, 91,245.83 and 35,905.45

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Solution

The fourth proportional to 66,120.38, 91,245.83 and 35,905.45 is: 49,549.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,120.38 : 91,245.83 = 35,905.45 : x
  2. Step 2: Convert to fraction form
    66,120.38/91,245.83 = 35,905.45/x
  3. Step 3: Cross multiply
    66,120.38x = 91,245.83 × 35,905.45
  4. Step 4: Simplify right side
    66,120.38x = 3,276,221,951.02
  5. Step 5: Solve for x
    x = 3,276,221,951.02/66,120.38
  6. Step 6: Final answer
    x = 49,549.36

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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.