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Finding the Fourth Proportional to 58,269.78, 87,405.18 and 18,826.90

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Solution

The fourth proportional to 58,269.78, 87,405.18 and 18,826.90 is: 28,240.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,269.78 : 87,405.18 = 18,826.90 : x
  2. Step 2: Convert to fraction form
    58,269.78/87,405.18 = 18,826.90/x
  3. Step 3: Cross multiply
    58,269.78x = 87,405.18 × 18,826.90
  4. Step 4: Simplify right side
    58,269.78x = 1,645,568,052.18
  5. Step 5: Solve for x
    x = 1,645,568,052.18/58,269.78
  6. Step 6: Final answer
    x = 28,240.51

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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.