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Finding the Fourth Proportional to 47,766.80, 71,653.44 and 12,705.68

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Solution

The fourth proportional to 47,766.80, 71,653.44 and 12,705.68 is: 19,059.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,766.80 : 71,653.44 = 12,705.68 : x
  2. Step 2: Convert to fraction form
    47,766.80/71,653.44 = 12,705.68/x
  3. Step 3: Cross multiply
    47,766.80x = 71,653.44 × 12,705.68
  4. Step 4: Simplify right side
    47,766.80x = 910,405,679.54
  5. Step 5: Solve for x
    x = 910,405,679.54/47,766.80
  6. Step 6: Final answer
    x = 19,059.38

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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.