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Finding the Fourth Proportional to 76,906.80, 115,165.80 and 50,468.40

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Solution

The fourth proportional to 76,906.80, 115,165.80 and 50,468.40 is: 75,575.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,906.80 : 115,165.80 = 50,468.40 : x
  2. Step 2: Convert to fraction form
    76,906.80/115,165.80 = 50,468.40/x
  3. Step 3: Cross multiply
    76,906.80x = 115,165.80 × 50,468.40
  4. Step 4: Simplify right side
    76,906.80x = 5,812,233,660.72
  5. Step 5: Solve for x
    x = 5,812,233,660.72/76,906.80
  6. Step 6: Final answer
    x = 75,575.03

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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.