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Finding the Fourth Proportional to 79,211.91, 118,817.86 and 26,621.39

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Solution

The fourth proportional to 79,211.91, 118,817.86 and 26,621.39 is: 39,932.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,211.91 : 118,817.86 = 26,621.39 : x
  2. Step 2: Convert to fraction form
    79,211.91/118,817.86 = 26,621.39/x
  3. Step 3: Cross multiply
    79,211.91x = 118,817.86 × 26,621.39
  4. Step 4: Simplify right side
    79,211.91x = 3,163,096,590.03
  5. Step 5: Solve for x
    x = 3,163,096,590.03/79,211.91
  6. Step 6: Final answer
    x = 39,932.08

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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.