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Finding the Fourth Proportional to 48,699.01, 72,993.15 and 20,601.53

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Solution

The fourth proportional to 48,699.01, 72,993.15 and 20,601.53 is: 30,878.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,699.01 : 72,993.15 = 20,601.53 : x
  2. Step 2: Convert to fraction form
    48,699.01/72,993.15 = 20,601.53/x
  3. Step 3: Cross multiply
    48,699.01x = 72,993.15 × 20,601.53
  4. Step 4: Simplify right side
    48,699.01x = 1,503,770,478.28
  5. Step 5: Solve for x
    x = 1,503,770,478.28/48,699.01
  6. Step 6: Final answer
    x = 30,878.87

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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.