Home / 90,201.35-124,476-49,915.09

Finding the Fourth Proportional to 90,201.35, 124,476 and 49,915.09

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Solution

The fourth proportional to 90,201.35, 124,476 and 49,915.09 is: 68,881.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,201.35 : 124,476 = 49,915.09 : x
  2. Step 2: Convert to fraction form
    90,201.35/124,476 = 49,915.09/x
  3. Step 3: Cross multiply
    90,201.35x = 124,476 × 49,915.09
  4. Step 4: Simplify right side
    90,201.35x = 6,213,230,431.65
  5. Step 5: Solve for x
    x = 6,213,230,431.65/90,201.35
  6. Step 6: Final answer
    x = 68,881.79

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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.