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Finding the Fourth Proportional to 30,540.99, 45,809.30 and 9,480.52

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Solution

The fourth proportional to 30,540.99, 45,809.30 and 9,480.52 is: 14,220.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,540.99 : 45,809.30 = 9,480.52 : x
  2. Step 2: Convert to fraction form
    30,540.99/45,809.30 = 9,480.52/x
  3. Step 3: Cross multiply
    30,540.99x = 45,809.30 × 9,480.52
  4. Step 4: Simplify right side
    30,540.99x = 434,295,984.84
  5. Step 5: Solve for x
    x = 434,295,984.84/30,540.99
  6. Step 6: Final answer
    x = 14,220.10

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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.