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Finding the Fourth Proportional to 45,205.89, 67,803.61 and 11,928.62

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Solution

The fourth proportional to 45,205.89, 67,803.61 and 11,928.62 is: 17,891.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,205.89 : 67,803.61 = 11,928.62 : x
  2. Step 2: Convert to fraction form
    45,205.89/67,803.61 = 11,928.62/x
  3. Step 3: Cross multiply
    45,205.89x = 67,803.61 × 11,928.62
  4. Step 4: Simplify right side
    45,205.89x = 808,803,498.32
  5. Step 5: Solve for x
    x = 808,803,498.32/45,205.89
  6. Step 6: Final answer
    x = 17,891.55

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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.