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Finding the Fourth Proportional to 79,755.56, 119,660.48 and 50,138.72

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Solution

The fourth proportional to 79,755.56, 119,660.48 and 50,138.72 is: 75,225.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,755.56 : 119,660.48 = 50,138.72 : x
  2. Step 2: Convert to fraction form
    79,755.56/119,660.48 = 50,138.72/x
  3. Step 3: Cross multiply
    79,755.56x = 119,660.48 × 50,138.72
  4. Step 4: Simplify right side
    79,755.56x = 5,999,623,301.79
  5. Step 5: Solve for x
    x = 5,999,623,301.79/79,755.56
  6. Step 6: Final answer
    x = 75,225.14

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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.