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Finding the Fourth Proportional to 71,504.75, 107,285.37 and 27,143.28

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Solution

The fourth proportional to 71,504.75, 107,285.37 and 27,143.28 is: 40,725.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,504.75 : 107,285.37 = 27,143.28 : x
  2. Step 2: Convert to fraction form
    71,504.75/107,285.37 = 27,143.28/x
  3. Step 3: Cross multiply
    71,504.75x = 107,285.37 × 27,143.28
  4. Step 4: Simplify right side
    71,504.75x = 2,912,076,837.81
  5. Step 5: Solve for x
    x = 2,912,076,837.81/71,504.75
  6. Step 6: Final answer
    x = 40,725.64

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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.