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Finding the Fourth Proportional to 57,826.29, 86,720.86 and 18,374.18

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Solution

The fourth proportional to 57,826.29, 86,720.86 and 18,374.18 is: 27,555.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,826.29 : 86,720.86 = 18,374.18 : x
  2. Step 2: Convert to fraction form
    57,826.29/86,720.86 = 18,374.18/x
  3. Step 3: Cross multiply
    57,826.29x = 86,720.86 × 18,374.18
  4. Step 4: Simplify right side
    57,826.29x = 1,593,424,691.39
  5. Step 5: Solve for x
    x = 1,593,424,691.39/57,826.29
  6. Step 6: Final answer
    x = 27,555.37

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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.