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Finding the Fourth Proportional to 79,136.94, 109,209 and 43,329.26

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Solution

The fourth proportional to 79,136.94, 109,209 and 43,329.26 is: 59,794.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,136.94 : 109,209 = 43,329.26 : x
  2. Step 2: Convert to fraction form
    79,136.94/109,209 = 43,329.26/x
  3. Step 3: Cross multiply
    79,136.94x = 109,209 × 43,329.26
  4. Step 4: Simplify right side
    79,136.94x = 4,731,945,155.34
  5. Step 5: Solve for x
    x = 4,731,945,155.34/79,136.94
  6. Step 6: Final answer
    x = 59,794.39

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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.