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Finding the Fourth Proportional to 90,651.88, 125,103.49 and 50,365.64

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Solution

The fourth proportional to 90,651.88, 125,103.49 and 50,365.64 is: 69,506.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,651.88 : 125,103.49 = 50,365.64 : x
  2. Step 2: Convert to fraction form
    90,651.88/125,103.49 = 50,365.64/x
  3. Step 3: Cross multiply
    90,651.88x = 125,103.49 × 50,365.64
  4. Step 4: Simplify right side
    90,651.88x = 6,300,917,340.08
  5. Step 5: Solve for x
    x = 6,300,917,340.08/90,651.88
  6. Step 6: Final answer
    x = 69,506.75

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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.