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Finding the Fourth Proportional to 79,940.66, 119,922.84 and 26,615.22

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Solution

The fourth proportional to 79,940.66, 119,922.84 and 26,615.22 is: 39,926.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,940.66 : 119,922.84 = 26,615.22 : x
  2. Step 2: Convert to fraction form
    79,940.66/119,922.84 = 26,615.22/x
  3. Step 3: Cross multiply
    79,940.66x = 119,922.84 × 26,615.22
  4. Step 4: Simplify right side
    79,940.66x = 3,191,772,769.62
  5. Step 5: Solve for x
    x = 3,191,772,769.62/79,940.66
  6. Step 6: Final answer
    x = 39,926.78

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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.