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Finding the Fourth Proportional to 52,719.36, 79,049.88 and 17,639.88

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Solution

The fourth proportional to 52,719.36, 79,049.88 and 17,639.88 is: 26,450.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,719.36 : 79,049.88 = 17,639.88 : x
  2. Step 2: Convert to fraction form
    52,719.36/79,049.88 = 17,639.88/x
  3. Step 3: Cross multiply
    52,719.36x = 79,049.88 × 17,639.88
  4. Step 4: Simplify right side
    52,719.36x = 1,394,430,397.21
  5. Step 5: Solve for x
    x = 1,394,430,397.21/52,719.36
  6. Step 6: Final answer
    x = 26,450.06

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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.