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Finding the Fourth Proportional to 50,697.60, 76,046.40 and 21,105.60

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Solution

The fourth proportional to 50,697.60, 76,046.40 and 21,105.60 is: 31,658.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,697.60 : 76,046.40 = 21,105.60 : x
  2. Step 2: Convert to fraction form
    50,697.60/76,046.40 = 21,105.60/x
  3. Step 3: Cross multiply
    50,697.60x = 76,046.40 × 21,105.60
  4. Step 4: Simplify right side
    50,697.60x = 1,605,004,899.84
  5. Step 5: Solve for x
    x = 1,605,004,899.84/50,697.60
  6. Step 6: Final answer
    x = 31,658.40

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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.