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Finding the Fourth Proportional to 72,506.39, 108,755.22 and 43,111.29

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Solution

The fourth proportional to 72,506.39, 108,755.22 and 43,111.29 is: 64,664.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,506.39 : 108,755.22 = 43,111.29 : x
  2. Step 2: Convert to fraction form
    72,506.39/108,755.22 = 43,111.29/x
  3. Step 3: Cross multiply
    72,506.39x = 108,755.22 × 43,111.29
  4. Step 4: Simplify right side
    72,506.39x = 4,688,577,422.43
  5. Step 5: Solve for x
    x = 4,688,577,422.43/72,506.39
  6. Step 6: Final answer
    x = 64,664.33

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.