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Finding the Fourth Proportional to 71,930.20, 107,903.40 and 22,009.90

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Solution

The fourth proportional to 71,930.20, 107,903.40 and 22,009.90 is: 33,017.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,930.20 : 107,903.40 = 22,009.90 : x
  2. Step 2: Convert to fraction form
    71,930.20/107,903.40 = 22,009.90/x
  3. Step 3: Cross multiply
    71,930.20x = 107,903.40 × 22,009.90
  4. Step 4: Simplify right side
    71,930.20x = 2,374,943,043.66
  5. Step 5: Solve for x
    x = 2,374,943,043.66/71,930.20
  6. Step 6: Final answer
    x = 33,017.33

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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.