Home / 90,212.70-124,495.07-49,380.41

Finding the Fourth Proportional to 90,212.70, 124,495.07 and 49,380.41

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Solution

The fourth proportional to 90,212.70, 124,495.07 and 49,380.41 is: 68,145.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,212.70 : 124,495.07 = 49,380.41 : x
  2. Step 2: Convert to fraction form
    90,212.70/124,495.07 = 49,380.41/x
  3. Step 3: Cross multiply
    90,212.70x = 124,495.07 × 49,380.41
  4. Step 4: Simplify right side
    90,212.70x = 6,147,616,730.20
  5. Step 5: Solve for x
    x = 6,147,616,730.20/90,212.70
  6. Step 6: Final answer
    x = 68,145.80

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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.