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Finding the Fourth Proportional to 79,024, 118,536 and 20,656

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Solution

The fourth proportional to 79,024, 118,536 and 20,656 is: 30,984

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,024 : 118,536 = 20,656 : x
  2. Step 2: Convert to fraction form
    79,024/118,536 = 20,656/x
  3. Step 3: Cross multiply
    79,024x = 118,536 × 20,656
  4. Step 4: Simplify right side
    79,024x = 2,448,479,616
  5. Step 5: Solve for x
    x = 2,448,479,616/79,024
  6. Step 6: Final answer
    x = 30,984

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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.