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Finding the Fourth Proportional to 43,689.78, 65,489.19 and 29,650.92

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Solution

The fourth proportional to 43,689.78, 65,489.19 and 29,650.92 is: 44,445.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,689.78 : 65,489.19 = 29,650.92 : x
  2. Step 2: Convert to fraction form
    43,689.78/65,489.19 = 29,650.92/x
  3. Step 3: Cross multiply
    43,689.78x = 65,489.19 × 29,650.92
  4. Step 4: Simplify right side
    43,689.78x = 1,941,814,733.55
  5. Step 5: Solve for x
    x = 1,941,814,733.55/43,689.78
  6. Step 6: Final answer
    x = 44,445.51

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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.