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Finding the Fourth Proportional to 55,059.84, 82,542.96 and 21,803.31

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Solution

The fourth proportional to 55,059.84, 82,542.96 and 21,803.31 is: 32,686.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,059.84 : 82,542.96 = 21,803.31 : x
  2. Step 2: Convert to fraction form
    55,059.84/82,542.96 = 21,803.31/x
  3. Step 3: Cross multiply
    55,059.84x = 82,542.96 × 21,803.31
  4. Step 4: Simplify right side
    55,059.84x = 1,799,709,745.20
  5. Step 5: Solve for x
    x = 1,799,709,745.20/55,059.84
  6. Step 6: Final answer
    x = 32,686.43

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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.