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Finding the Fourth Proportional to 55,660.88, 83,499.96 and 18,722

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Solution

The fourth proportional to 55,660.88, 83,499.96 and 18,722 is: 28,085.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,660.88 : 83,499.96 = 18,722 : x
  2. Step 2: Convert to fraction form
    55,660.88/83,499.96 = 18,722/x
  3. Step 3: Cross multiply
    55,660.88x = 83,499.96 × 18,722
  4. Step 4: Simplify right side
    55,660.88x = 1,563,286,251.12
  5. Step 5: Solve for x
    x = 1,563,286,251.12/55,660.88
  6. Step 6: Final answer
    x = 28,085.91

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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.