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Finding the Fourth Proportional to 43,775.86, 65,651.83 and 15,690.68

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Solution

The fourth proportional to 43,775.86, 65,651.83 and 15,690.68 is: 23,531.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,775.86 : 65,651.83 = 15,690.68 : x
  2. Step 2: Convert to fraction form
    43,775.86/65,651.83 = 15,690.68/x
  3. Step 3: Cross multiply
    43,775.86x = 65,651.83 × 15,690.68
  4. Step 4: Simplify right side
    43,775.86x = 1,030,121,756.72
  5. Step 5: Solve for x
    x = 1,030,121,756.72/43,775.86
  6. Step 6: Final answer
    x = 23,531.73

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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.