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Finding the Fourth Proportional to 54,934.20, 82,401.30 and 13,381.20

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Solution

The fourth proportional to 54,934.20, 82,401.30 and 13,381.20 is: 20,071.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,934.20 : 82,401.30 = 13,381.20 : x
  2. Step 2: Convert to fraction form
    54,934.20/82,401.30 = 13,381.20/x
  3. Step 3: Cross multiply
    54,934.20x = 82,401.30 × 13,381.20
  4. Step 4: Simplify right side
    54,934.20x = 1,102,628,275.56
  5. Step 5: Solve for x
    x = 1,102,628,275.56/54,934.20
  6. Step 6: Final answer
    x = 20,071.80

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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.