Home / 85,698.20-128,584.08-33,144.56

Finding the Fourth Proportional to 85,698.20, 128,584.08 and 33,144.56

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Solution

The fourth proportional to 85,698.20, 128,584.08 and 33,144.56 is: 49,731.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,698.20 : 128,584.08 = 33,144.56 : x
  2. Step 2: Convert to fraction form
    85,698.20/128,584.08 = 33,144.56/x
  3. Step 3: Cross multiply
    85,698.20x = 128,584.08 × 33,144.56
  4. Step 4: Simplify right side
    85,698.20x = 4,261,862,754.60
  5. Step 5: Solve for x
    x = 4,261,862,754.60/85,698.20
  6. Step 6: Final answer
    x = 49,731.07

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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.