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Finding the Fourth Proportional to 43,454.44, 65,158.62 and 18,817

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Solution

The fourth proportional to 43,454.44, 65,158.62 and 18,817 is: 28,215.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,454.44 : 65,158.62 = 18,817 : x
  2. Step 2: Convert to fraction form
    43,454.44/65,158.62 = 18,817/x
  3. Step 3: Cross multiply
    43,454.44x = 65,158.62 × 18,817
  4. Step 4: Simplify right side
    43,454.44x = 1,226,089,752.54
  5. Step 5: Solve for x
    x = 1,226,089,752.54/43,454.44
  6. Step 6: Final answer
    x = 28,215.52

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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.