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Finding the Fourth Proportional to 71,326.34, 106,974.02 and 21,393.03

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Solution

The fourth proportional to 71,326.34, 106,974.02 and 21,393.03 is: 32,084.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,326.34 : 106,974.02 = 21,393.03 : x
  2. Step 2: Convert to fraction form
    71,326.34/106,974.02 = 21,393.03/x
  3. Step 3: Cross multiply
    71,326.34x = 106,974.02 × 21,393.03
  4. Step 4: Simplify right side
    71,326.34x = 2,288,498,312.12
  5. Step 5: Solve for x
    x = 2,288,498,312.12/71,326.34
  6. Step 6: Final answer
    x = 32,084.90

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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.