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Finding the Fourth Proportional to 48,398.80, 72,620.88 and 18,808.96

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Solution

The fourth proportional to 48,398.80, 72,620.88 and 18,808.96 is: 28,222.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,398.80 : 72,620.88 = 18,808.96 : x
  2. Step 2: Convert to fraction form
    48,398.80/72,620.88 = 18,808.96/x
  3. Step 3: Cross multiply
    48,398.80x = 72,620.88 × 18,808.96
  4. Step 4: Simplify right side
    48,398.80x = 1,365,923,227.08
  5. Step 5: Solve for x
    x = 1,365,923,227.08/48,398.80
  6. Step 6: Final answer
    x = 28,222.25

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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.