Home / 66,589.35-91,869.39-39,359.70

Finding the Fourth Proportional to 66,589.35, 91,869.39 and 39,359.70

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Solution

The fourth proportional to 66,589.35, 91,869.39 and 39,359.70 is: 54,302.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,589.35 : 91,869.39 = 39,359.70 : x
  2. Step 2: Convert to fraction form
    66,589.35/91,869.39 = 39,359.70/x
  3. Step 3: Cross multiply
    66,589.35x = 91,869.39 × 39,359.70
  4. Step 4: Simplify right side
    66,589.35x = 3,615,951,629.58
  5. Step 5: Solve for x
    x = 3,615,951,629.58/66,589.35
  6. Step 6: Final answer
    x = 54,302.25

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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.