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Finding the Fourth Proportional to 79,515.54, 109,731.78 and 43,704.63

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Solution

The fourth proportional to 79,515.54, 109,731.78 and 43,704.63 is: 60,312.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,515.54 : 109,731.78 = 43,704.63 : x
  2. Step 2: Convert to fraction form
    79,515.54/109,731.78 = 43,704.63/x
  3. Step 3: Cross multiply
    79,515.54x = 109,731.78 × 43,704.63
  4. Step 4: Simplify right side
    79,515.54x = 4,795,786,844.14
  5. Step 5: Solve for x
    x = 4,795,786,844.14/79,515.54
  6. Step 6: Final answer
    x = 60,312.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.