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Finding the Fourth Proportional to 52,786.80, 79,136.40 and 19,500.60

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Solution

The fourth proportional to 52,786.80, 79,136.40 and 19,500.60 is: 29,234.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,786.80 : 79,136.40 = 19,500.60 : x
  2. Step 2: Convert to fraction form
    52,786.80/79,136.40 = 19,500.60/x
  3. Step 3: Cross multiply
    52,786.80x = 79,136.40 × 19,500.60
  4. Step 4: Simplify right side
    52,786.80x = 1,543,207,281.84
  5. Step 5: Solve for x
    x = 1,543,207,281.84/52,786.80
  6. Step 6: Final answer
    x = 29,234.72

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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.