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Finding the Fourth Proportional to 74,304.63, 111,447.18 and 21,719.43

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Solution

The fourth proportional to 74,304.63, 111,447.18 and 21,719.43 is: 32,576.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,304.63 : 111,447.18 = 21,719.43 : x
  2. Step 2: Convert to fraction form
    74,304.63/111,447.18 = 21,719.43/x
  3. Step 3: Cross multiply
    74,304.63x = 111,447.18 × 21,719.43
  4. Step 4: Simplify right side
    74,304.63x = 2,420,569,224.71
  5. Step 5: Solve for x
    x = 2,420,569,224.71/74,304.63
  6. Step 6: Final answer
    x = 32,576.29

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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.