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Finding the Fourth Proportional to 45,295.91, 67,930.19 and 18,994.80

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Solution

The fourth proportional to 45,295.91, 67,930.19 and 18,994.80 is: 28,486.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,295.91 : 67,930.19 = 18,994.80 : x
  2. Step 2: Convert to fraction form
    45,295.91/67,930.19 = 18,994.80/x
  3. Step 3: Cross multiply
    45,295.91x = 67,930.19 × 18,994.80
  4. Step 4: Simplify right side
    45,295.91x = 1,290,320,710.85
  5. Step 5: Solve for x
    x = 1,290,320,710.85/45,295.91
  6. Step 6: Final answer
    x = 28,486.47

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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.