Home / 66,785.07-100,161.87-19,387.65

Finding the Fourth Proportional to 66,785.07, 100,161.87 and 19,387.65

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Solution

The fourth proportional to 66,785.07, 100,161.87 and 19,387.65 is: 29,076.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,785.07 : 100,161.87 = 19,387.65 : x
  2. Step 2: Convert to fraction form
    66,785.07/100,161.87 = 19,387.65/x
  3. Step 3: Cross multiply
    66,785.07x = 100,161.87 × 19,387.65
  4. Step 4: Simplify right side
    66,785.07x = 1,941,903,278.91
  5. Step 5: Solve for x
    x = 1,941,903,278.91/66,785.07
  6. Step 6: Final answer
    x = 29,076.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.