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Finding the Fourth Proportional to 50,720.75, 76,066.25 and 19,108

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Solution

The fourth proportional to 50,720.75, 76,066.25 and 19,108 is: 28,656.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,720.75 : 76,066.25 = 19,108 : x
  2. Step 2: Convert to fraction form
    50,720.75/76,066.25 = 19,108/x
  3. Step 3: Cross multiply
    50,720.75x = 76,066.25 × 19,108
  4. Step 4: Simplify right side
    50,720.75x = 1,453,473,905
  5. Step 5: Solve for x
    x = 1,453,473,905/50,720.75
  6. Step 6: Final answer
    x = 28,656.40

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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.