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Finding the Fourth Proportional to 54,679.69, 82,019.52 and 13,126.69

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Solution

The fourth proportional to 54,679.69, 82,019.52 and 13,126.69 is: 19,690.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,679.69 : 82,019.52 = 13,126.69 : x
  2. Step 2: Convert to fraction form
    54,679.69/82,019.52 = 13,126.69/x
  3. Step 3: Cross multiply
    54,679.69x = 82,019.52 × 13,126.69
  4. Step 4: Simplify right side
    54,679.69x = 1,076,644,812.99
  5. Step 5: Solve for x
    x = 1,076,644,812.99/54,679.69
  6. Step 6: Final answer
    x = 19,690.03

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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.