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Finding the Fourth Proportional to 28,809, 43,220.79 and 8,032.50

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Solution

The fourth proportional to 28,809, 43,220.79 and 8,032.50 is: 12,050.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,809 : 43,220.79 = 8,032.50 : x
  2. Step 2: Convert to fraction form
    28,809/43,220.79 = 8,032.50/x
  3. Step 3: Cross multiply
    28,809x = 43,220.79 × 8,032.50
  4. Step 4: Simplify right side
    28,809x = 347,170,995.68
  5. Step 5: Solve for x
    x = 347,170,995.68/28,809
  6. Step 6: Final answer
    x = 12,050.78

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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.