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Finding the Fourth Proportional to 52,786.60, 79,112.70 and 21,586.60

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Solution

The fourth proportional to 52,786.60, 79,112.70 and 21,586.60 is: 32,352.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,786.60 : 79,112.70 = 21,586.60 : x
  2. Step 2: Convert to fraction form
    52,786.60/79,112.70 = 21,586.60/x
  3. Step 3: Cross multiply
    52,786.60x = 79,112.70 × 21,586.60
  4. Step 4: Simplify right side
    52,786.60x = 1,707,774,209.82
  5. Step 5: Solve for x
    x = 1,707,774,209.82/52,786.60
  6. Step 6: Final answer
    x = 32,352.42

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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.