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Finding the Fourth Proportional to 30,403, 45,604.50 and 8,214.67

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Solution

The fourth proportional to 30,403, 45,604.50 and 8,214.67 is: 12,322.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,403 : 45,604.50 = 8,214.67 : x
  2. Step 2: Convert to fraction form
    30,403/45,604.50 = 8,214.67/x
  3. Step 3: Cross multiply
    30,403x = 45,604.50 × 8,214.67
  4. Step 4: Simplify right side
    30,403x = 374,625,918.02
  5. Step 5: Solve for x
    x = 374,625,918.02/30,403
  6. Step 6: Final answer
    x = 12,322.01

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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.