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Finding the Fourth Proportional to 50,307.88, 75,477.61 and 20,739.64

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Solution

The fourth proportional to 50,307.88, 75,477.61 and 20,739.64 is: 31,115.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,307.88 : 75,477.61 = 20,739.64 : x
  2. Step 2: Convert to fraction form
    50,307.88/75,477.61 = 20,739.64/x
  3. Step 3: Cross multiply
    50,307.88x = 75,477.61 × 20,739.64
  4. Step 4: Simplify right side
    50,307.88x = 1,565,378,296.69
  5. Step 5: Solve for x
    x = 1,565,378,296.69/50,307.88
  6. Step 6: Final answer
    x = 31,115.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.