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Finding the Fourth Proportional to 30,043.94, 45,072.24 and 8,985.62

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Solution

The fourth proportional to 30,043.94, 45,072.24 and 8,985.62 is: 13,480.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,043.94 : 45,072.24 = 8,985.62 : x
  2. Step 2: Convert to fraction form
    30,043.94/45,072.24 = 8,985.62/x
  3. Step 3: Cross multiply
    30,043.94x = 45,072.24 × 8,985.62
  4. Step 4: Simplify right side
    30,043.94x = 405,002,021.19
  5. Step 5: Solve for x
    x = 405,002,021.19/30,043.94
  6. Step 6: Final answer
    x = 13,480.32

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1.5x scale

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.