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Finding the Fourth Proportional to 55,658.75, 83,495.99 and 18,221.87

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Solution

The fourth proportional to 55,658.75, 83,495.99 and 18,221.87 is: 27,335.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,658.75 : 83,495.99 = 18,221.87 : x
  2. Step 2: Convert to fraction form
    55,658.75/83,495.99 = 18,221.87/x
  3. Step 3: Cross multiply
    55,658.75x = 83,495.99 × 18,221.87
  4. Step 4: Simplify right side
    55,658.75x = 1,521,453,016.49
  5. Step 5: Solve for x
    x = 1,521,453,016.49/55,658.75
  6. Step 6: Final answer
    x = 27,335.38

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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.