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Finding the Fourth Proportional to 54,775.86, 82,163.79 and 21,511.59

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Solution

The fourth proportional to 54,775.86, 82,163.79 and 21,511.59 is: 32,267.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,775.86 : 82,163.79 = 21,511.59 : x
  2. Step 2: Convert to fraction form
    54,775.86/82,163.79 = 21,511.59/x
  3. Step 3: Cross multiply
    54,775.86x = 82,163.79 × 21,511.59
  4. Step 4: Simplify right side
    54,775.86x = 1,767,473,763.33
  5. Step 5: Solve for x
    x = 1,767,473,763.33/54,775.86
  6. Step 6: Final answer
    x = 32,267.39

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Double scale
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Similar ratio
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1.5x scale

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.