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Finding the Fourth Proportional to 66,000.36, 91,080.21 and 35,785.59

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Solution

The fourth proportional to 66,000.36, 91,080.21 and 35,785.59 is: 49,383.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,000.36 : 91,080.21 = 35,785.59 : x
  2. Step 2: Convert to fraction form
    66,000.36/91,080.21 = 35,785.59/x
  3. Step 3: Cross multiply
    66,000.36x = 91,080.21 × 35,785.59
  4. Step 4: Simplify right side
    66,000.36x = 3,259,359,052.17
  5. Step 5: Solve for x
    x = 3,259,359,052.17/66,000.36
  6. Step 6: Final answer
    x = 49,383.96

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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.