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Finding the Fourth Proportional to 45,348.92, 67,910.25 and 28,658.60

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Solution

The fourth proportional to 45,348.92, 67,910.25 and 28,658.60 is: 42,916.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,348.92 : 67,910.25 = 28,658.60 : x
  2. Step 2: Convert to fraction form
    45,348.92/67,910.25 = 28,658.60/x
  3. Step 3: Cross multiply
    45,348.92x = 67,910.25 × 28,658.60
  4. Step 4: Simplify right side
    45,348.92x = 1,946,212,690.65
  5. Step 5: Solve for x
    x = 1,946,212,690.65/45,348.92
  6. Step 6: Final answer
    x = 42,916.41

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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.