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Finding the Fourth Proportional to 100,643.77, 150,990.39 and 50,066.66

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Solution

The fourth proportional to 100,643.77, 150,990.39 and 50,066.66 is: 75,112.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,643.77 : 150,990.39 = 50,066.66 : x
  2. Step 2: Convert to fraction form
    100,643.77/150,990.39 = 50,066.66/x
  3. Step 3: Cross multiply
    100,643.77x = 150,990.39 × 50,066.66
  4. Step 4: Simplify right side
    100,643.77x = 7,559,584,330.66
  5. Step 5: Solve for x
    x = 7,559,584,330.66/100,643.77
  6. Step 6: Final answer
    x = 75,112.29

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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.