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Finding the Fourth Proportional to 71,951.56, 99,300.54 and 43,280.44

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Solution

The fourth proportional to 71,951.56, 99,300.54 and 43,280.44 is: 59,731.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,951.56 : 99,300.54 = 43,280.44 : x
  2. Step 2: Convert to fraction form
    71,951.56/99,300.54 = 43,280.44/x
  3. Step 3: Cross multiply
    71,951.56x = 99,300.54 × 43,280.44
  4. Step 4: Simplify right side
    71,951.56x = 4,297,771,063.44
  5. Step 5: Solve for x
    x = 4,297,771,063.44/71,951.56
  6. Step 6: Final answer
    x = 59,731.45

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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.