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Finding the Fourth Proportional to 28,751.40, 43,127.10 and 27,496.80

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Solution

The fourth proportional to 28,751.40, 43,127.10 and 27,496.80 is: 41,245.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,751.40 : 43,127.10 = 27,496.80 : x
  2. Step 2: Convert to fraction form
    28,751.40/43,127.10 = 27,496.80/x
  3. Step 3: Cross multiply
    28,751.40x = 43,127.10 × 27,496.80
  4. Step 4: Simplify right side
    28,751.40x = 1,185,857,243.28
  5. Step 5: Solve for x
    x = 1,185,857,243.28/28,751.40
  6. Step 6: Final answer
    x = 41,245.20

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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.