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Finding the Fourth Proportional to 30,003, 44,980.20 and 12,485.94

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Solution

The fourth proportional to 30,003, 44,980.20 and 12,485.94 is: 18,718.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,003 : 44,980.20 = 12,485.94 : x
  2. Step 2: Convert to fraction form
    30,003/44,980.20 = 12,485.94/x
  3. Step 3: Cross multiply
    30,003x = 44,980.20 × 12,485.94
  4. Step 4: Simplify right side
    30,003x = 561,620,078.39
  5. Step 5: Solve for x
    x = 561,620,078.39/30,003
  6. Step 6: Final answer
    x = 18,718.80

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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.