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Finding the Fourth Proportional to 79,780.78, 110,092.52 and 43,968.80

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Solution

The fourth proportional to 79,780.78, 110,092.52 and 43,968.80 is: 60,674.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,780.78 : 110,092.52 = 43,968.80 : x
  2. Step 2: Convert to fraction form
    79,780.78/110,092.52 = 43,968.80/x
  3. Step 3: Cross multiply
    79,780.78x = 110,092.52 × 43,968.80
  4. Step 4: Simplify right side
    79,780.78x = 4,840,635,993.38
  5. Step 5: Solve for x
    x = 4,840,635,993.38/79,780.78
  6. Step 6: Final answer
    x = 60,674.21

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1.5x scale

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.