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Finding the Fourth Proportional to 45,239.52, 67,890.96 and 18,950.88

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Solution

The fourth proportional to 45,239.52, 67,890.96 and 18,950.88 is: 28,439.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,239.52 : 67,890.96 = 18,950.88 : x
  2. Step 2: Convert to fraction form
    45,239.52/67,890.96 = 18,950.88/x
  3. Step 3: Cross multiply
    45,239.52x = 67,890.96 × 18,950.88
  4. Step 4: Simplify right side
    45,239.52x = 1,286,593,436.04
  5. Step 5: Solve for x
    x = 1,286,593,436.04/45,239.52
  6. Step 6: Final answer
    x = 28,439.59

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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.