Home / 90,108.50-124,339.15-49,819.86

Finding the Fourth Proportional to 90,108.50, 124,339.15 and 49,819.86

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Solution

The fourth proportional to 90,108.50, 124,339.15 and 49,819.86 is: 68,745.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,108.50 : 124,339.15 = 49,819.86 : x
  2. Step 2: Convert to fraction form
    90,108.50/124,339.15 = 49,819.86/x
  3. Step 3: Cross multiply
    90,108.50x = 124,339.15 × 49,819.86
  4. Step 4: Simplify right side
    90,108.50x = 6,194,559,107.79
  5. Step 5: Solve for x
    x = 6,194,559,107.79/90,108.50
  6. Step 6: Final answer
    x = 68,745.56

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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.