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Finding the Fourth Proportional to 27,979.20, 41,968.80 and 27,979.20

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Solution

The fourth proportional to 27,979.20, 41,968.80 and 27,979.20 is: 41,968.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,979.20 : 41,968.80 = 27,979.20 : x
  2. Step 2: Convert to fraction form
    27,979.20/41,968.80 = 27,979.20/x
  3. Step 3: Cross multiply
    27,979.20x = 41,968.80 × 27,979.20
  4. Step 4: Simplify right side
    27,979.20x = 1,174,253,448.96
  5. Step 5: Solve for x
    x = 1,174,253,448.96/27,979.20
  6. Step 6: Final answer
    x = 41,968.80

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1.5x scale

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.