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Finding the Fourth Proportional to 47,866.56, 71,794.26 and 12,808.98

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Solution

The fourth proportional to 47,866.56, 71,794.26 and 12,808.98 is: 19,211.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,866.56 : 71,794.26 = 12,808.98 : x
  2. Step 2: Convert to fraction form
    47,866.56/71,794.26 = 12,808.98/x
  3. Step 3: Cross multiply
    47,866.56x = 71,794.26 × 12,808.98
  4. Step 4: Simplify right side
    47,866.56x = 919,611,240.45
  5. Step 5: Solve for x
    x = 919,611,240.45/47,866.56
  6. Step 6: Final answer
    x = 19,211.98

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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.