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Finding the Fourth Proportional to 40,684.50, 61,027.86 and 12,982.50

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Solution

The fourth proportional to 40,684.50, 61,027.86 and 12,982.50 is: 19,474.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,684.50 : 61,027.86 = 12,982.50 : x
  2. Step 2: Convert to fraction form
    40,684.50/61,027.86 = 12,982.50/x
  3. Step 3: Cross multiply
    40,684.50x = 61,027.86 × 12,982.50
  4. Step 4: Simplify right side
    40,684.50x = 792,294,192.45
  5. Step 5: Solve for x
    x = 792,294,192.45/40,684.50
  6. Step 6: Final answer
    x = 19,474.10

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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.