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Finding the Fourth Proportional to 71,048.73, 106,533.91 and 28,918

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Solution

The fourth proportional to 71,048.73, 106,533.91 and 28,918 is: 43,361.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,048.73 : 106,533.91 = 28,918 : x
  2. Step 2: Convert to fraction form
    71,048.73/106,533.91 = 28,918/x
  3. Step 3: Cross multiply
    71,048.73x = 106,533.91 × 28,918
  4. Step 4: Simplify right side
    71,048.73x = 3,080,747,609.38
  5. Step 5: Solve for x
    x = 3,080,747,609.38/71,048.73
  6. Step 6: Final answer
    x = 43,361.05

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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.