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Finding the Fourth Proportional to 43,314, 64,996.92 and 18,690

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Solution

The fourth proportional to 43,314, 64,996.92 and 18,690 is: 28,046.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,314 : 64,996.92 = 18,690 : x
  2. Step 2: Convert to fraction form
    43,314/64,996.92 = 18,690/x
  3. Step 3: Cross multiply
    43,314x = 64,996.92 × 18,690
  4. Step 4: Simplify right side
    43,314x = 1,214,792,434.80
  5. Step 5: Solve for x
    x = 1,214,792,434.80/43,314
  6. Step 6: Final answer
    x = 28,046.18

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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.