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Finding the Fourth Proportional to 43,991.73, 65,937.99 and 21,820.98

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Solution

The fourth proportional to 43,991.73, 65,937.99 and 21,820.98 is: 32,706.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,991.73 : 65,937.99 = 21,820.98 : x
  2. Step 2: Convert to fraction form
    43,991.73/65,937.99 = 21,820.98/x
  3. Step 3: Cross multiply
    43,991.73x = 65,937.99 × 21,820.98
  4. Step 4: Simplify right side
    43,991.73x = 1,438,831,561.03
  5. Step 5: Solve for x
    x = 1,438,831,561.03/43,991.73
  6. Step 6: Final answer
    x = 32,706.86

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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.