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Finding the Fourth Proportional to 81,788.41, 122,668.39 and 26,384.41

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Solution

The fourth proportional to 81,788.41, 122,668.39 and 26,384.41 is: 39,572.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,788.41 : 122,668.39 = 26,384.41 : x
  2. Step 2: Convert to fraction form
    81,788.41/122,668.39 = 26,384.41/x
  3. Step 3: Cross multiply
    81,788.41x = 122,668.39 × 26,384.41
  4. Step 4: Simplify right side
    81,788.41x = 3,236,533,095.80
  5. Step 5: Solve for x
    x = 3,236,533,095.80/81,788.41
  6. Step 6: Final answer
    x = 39,572.03

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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.