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Finding the Fourth Proportional to 28,978.12, 40,007.46 and 27,191.08

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Solution

The fourth proportional to 28,978.12, 40,007.46 and 27,191.08 is: 37,540.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,978.12 : 40,007.46 = 27,191.08 : x
  2. Step 2: Convert to fraction form
    28,978.12/40,007.46 = 27,191.08/x
  3. Step 3: Cross multiply
    28,978.12x = 40,007.46 × 27,191.08
  4. Step 4: Simplify right side
    28,978.12x = 1,087,846,045.46
  5. Step 5: Solve for x
    x = 1,087,846,045.46/28,978.12
  6. Step 6: Final answer
    x = 37,540.26

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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.