Home / 85,732.49-128,578.08-33,108.41

Finding the Fourth Proportional to 85,732.49, 128,578.08 and 33,108.41

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Solution

The fourth proportional to 85,732.49, 128,578.08 and 33,108.41 is: 49,654.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,732.49 : 128,578.08 = 33,108.41 : x
  2. Step 2: Convert to fraction form
    85,732.49/128,578.08 = 33,108.41/x
  3. Step 3: Cross multiply
    85,732.49x = 128,578.08 × 33,108.41
  4. Step 4: Simplify right side
    85,732.49x = 4,257,015,789.65
  5. Step 5: Solve for x
    x = 4,257,015,789.65/85,732.49
  6. Step 6: Final answer
    x = 49,654.64

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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.