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Finding the Fourth Proportional to 71,483.60, 107,226.31 and 18,892.63

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Solution

The fourth proportional to 71,483.60, 107,226.31 and 18,892.63 is: 28,339.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,483.60 : 107,226.31 = 18,892.63 : x
  2. Step 2: Convert to fraction form
    71,483.60/107,226.31 = 18,892.63/x
  3. Step 3: Cross multiply
    71,483.60x = 107,226.31 × 18,892.63
  4. Step 4: Simplify right side
    71,483.60x = 2,025,786,685.80
  5. Step 5: Solve for x
    x = 2,025,786,685.80/71,483.60
  6. Step 6: Final answer
    x = 28,339.18

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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.