Home / 66,634.39-91,940.29-39,785.59

Finding the Fourth Proportional to 66,634.39, 91,940.29 and 39,785.59

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Solution

The fourth proportional to 66,634.39, 91,940.29 and 39,785.59 is: 54,895.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,634.39 : 91,940.29 = 39,785.59 : x
  2. Step 2: Convert to fraction form
    66,634.39/91,940.29 = 39,785.59/x
  3. Step 3: Cross multiply
    66,634.39x = 91,940.29 × 39,785.59
  4. Step 4: Simplify right side
    66,634.39x = 3,657,898,682.42
  5. Step 5: Solve for x
    x = 3,657,898,682.42/66,634.39
  6. Step 6: Final answer
    x = 54,895.06

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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.