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Finding the Fourth Proportional to 45,149.82, 67,713.84 and 18,840.30

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Solution

The fourth proportional to 45,149.82, 67,713.84 and 18,840.30 is: 28,255.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,149.82 : 67,713.84 = 18,840.30 : x
  2. Step 2: Convert to fraction form
    45,149.82/67,713.84 = 18,840.30/x
  3. Step 3: Cross multiply
    45,149.82x = 67,713.84 × 18,840.30
  4. Step 4: Simplify right side
    45,149.82x = 1,275,749,059.75
  5. Step 5: Solve for x
    x = 1,275,749,059.75/45,149.82
  6. Step 6: Final answer
    x = 28,255.91

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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.