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Finding the Fourth Proportional to 52,797.75, 79,196.59 and 21,207.79

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Solution

The fourth proportional to 52,797.75, 79,196.59 and 21,207.79 is: 31,811.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,797.75 : 79,196.59 = 21,207.79 : x
  2. Step 2: Convert to fraction form
    52,797.75/79,196.59 = 21,207.79/x
  3. Step 3: Cross multiply
    52,797.75x = 79,196.59 × 21,207.79
  4. Step 4: Simplify right side
    52,797.75x = 1,679,584,649.44
  5. Step 5: Solve for x
    x = 1,679,584,649.44/52,797.75
  6. Step 6: Final answer
    x = 31,811.67

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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.