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Finding the Fourth Proportional to 90,651.90, 125,099.77 and 50,365.71

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Solution

The fourth proportional to 90,651.90, 125,099.77 and 50,365.71 is: 69,504.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,651.90 : 125,099.77 = 50,365.71 : x
  2. Step 2: Convert to fraction form
    90,651.90/125,099.77 = 50,365.71/x
  3. Step 3: Cross multiply
    90,651.90x = 125,099.77 × 50,365.71
  4. Step 4: Simplify right side
    90,651.90x = 6,300,738,736.89
  5. Step 5: Solve for x
    x = 6,300,738,736.89/90,651.90
  6. Step 6: Final answer
    x = 69,504.76

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1.5x scale

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.