Home / 90,105.20-124,338.63-49,819.46

Finding the Fourth Proportional to 90,105.20, 124,338.63 and 49,819.46

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Solution

The fourth proportional to 90,105.20, 124,338.63 and 49,819.46 is: 68,747.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,105.20 : 124,338.63 = 49,819.46 : x
  2. Step 2: Convert to fraction form
    90,105.20/124,338.63 = 49,819.46/x
  3. Step 3: Cross multiply
    90,105.20x = 124,338.63 × 49,819.46
  4. Step 4: Simplify right side
    90,105.20x = 6,194,483,403.74
  5. Step 5: Solve for x
    x = 6,194,483,403.74/90,105.20
  6. Step 6: Final answer
    x = 68,747.24

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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.