Home / 66,784.20-92,169.12-39,576.52

Finding the Fourth Proportional to 66,784.20, 92,169.12 and 39,576.52

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Solution

The fourth proportional to 66,784.20, 92,169.12 and 39,576.52 is: 54,619.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,784.20 : 92,169.12 = 39,576.52 : x
  2. Step 2: Convert to fraction form
    66,784.20/92,169.12 = 39,576.52/x
  3. Step 3: Cross multiply
    66,784.20x = 92,169.12 × 39,576.52
  4. Step 4: Simplify right side
    66,784.20x = 3,647,733,021.06
  5. Step 5: Solve for x
    x = 3,647,733,021.06/66,784.20
  6. Step 6: Final answer
    x = 54,619.70

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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.