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Finding the Fourth Proportional to 30,480.58, 45,711.38 and 10,754.51

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Solution

The fourth proportional to 30,480.58, 45,711.38 and 10,754.51 is: 16,128.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,480.58 : 45,711.38 = 10,754.51 : x
  2. Step 2: Convert to fraction form
    30,480.58/45,711.38 = 10,754.51/x
  3. Step 3: Cross multiply
    30,480.58x = 45,711.38 × 10,754.51
  4. Step 4: Simplify right side
    30,480.58x = 491,603,651.30
  5. Step 5: Solve for x
    x = 491,603,651.30/30,480.58
  6. Step 6: Final answer
    x = 16,128.42

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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.