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Finding the Fourth Proportional to 50,125.12, 75,188.16 and 13,189.12

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Solution

The fourth proportional to 50,125.12, 75,188.16 and 13,189.12 is: 19,783.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,125.12 : 75,188.16 = 13,189.12 : x
  2. Step 2: Convert to fraction form
    50,125.12/75,188.16 = 13,189.12/x
  3. Step 3: Cross multiply
    50,125.12x = 75,188.16 × 13,189.12
  4. Step 4: Simplify right side
    50,125.12x = 991,665,664.82
  5. Step 5: Solve for x
    x = 991,665,664.82/50,125.12
  6. Step 6: Final answer
    x = 19,783.81

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