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Finding the Fourth Proportional to 36,712.80, 55,052 and 21,519.99

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Solution

The fourth proportional to 36,712.80, 55,052 and 21,519.99 is: 32,269.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,712.80 : 55,052 = 21,519.99 : x
  2. Step 2: Convert to fraction form
    36,712.80/55,052 = 21,519.99/x
  3. Step 3: Cross multiply
    36,712.80x = 55,052 × 21,519.99
  4. Step 4: Simplify right side
    36,712.80x = 1,184,718,489.48
  5. Step 5: Solve for x
    x = 1,184,718,489.48/36,712.80
  6. Step 6: Final answer
    x = 32,269.90

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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.