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Finding the Fourth Proportional to 67,660.40, 101,514.90 and 28,229.60

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Solution

The fourth proportional to 67,660.40, 101,514.90 and 28,229.60 is: 42,354.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,660.40 : 101,514.90 = 28,229.60 : x
  2. Step 2: Convert to fraction form
    67,660.40/101,514.90 = 28,229.60/x
  3. Step 3: Cross multiply
    67,660.40x = 101,514.90 × 28,229.60
  4. Step 4: Simplify right side
    67,660.40x = 2,865,725,021.04
  5. Step 5: Solve for x
    x = 2,865,725,021.04/67,660.40
  6. Step 6: Final answer
    x = 42,354.54

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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.