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Finding the Fourth Proportional to 43,672.78, 65,454.36 and 18,683.46

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Solution

The fourth proportional to 43,672.78, 65,454.36 and 18,683.46 is: 28,001.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,672.78 : 65,454.36 = 18,683.46 : x
  2. Step 2: Convert to fraction form
    43,672.78/65,454.36 = 18,683.46/x
  3. Step 3: Cross multiply
    43,672.78x = 65,454.36 × 18,683.46
  4. Step 4: Simplify right side
    43,672.78x = 1,222,913,916.89
  5. Step 5: Solve for x
    x = 1,222,913,916.89/43,672.78
  6. Step 6: Final answer
    x = 28,001.74

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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.