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Finding the Fourth Proportional to 71,463.60, 107,193.20 and 18,873.36

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Solution

The fourth proportional to 71,463.60, 107,193.20 and 18,873.36 is: 28,309.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,463.60 : 107,193.20 = 18,873.36 : x
  2. Step 2: Convert to fraction form
    71,463.60/107,193.20 = 18,873.36/x
  3. Step 3: Cross multiply
    71,463.60x = 107,193.20 × 18,873.36
  4. Step 4: Simplify right side
    71,463.60x = 2,023,095,853.15
  5. Step 5: Solve for x
    x = 2,023,095,853.15/71,463.60
  6. Step 6: Final answer
    x = 28,309.46

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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.