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Finding the Fourth Proportional to 51,104, 70,524.60 and 28,748

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Solution

The fourth proportional to 51,104, 70,524.60 and 28,748 is: 39,672.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,104 : 70,524.60 = 28,748 : x
  2. Step 2: Convert to fraction form
    51,104/70,524.60 = 28,748/x
  3. Step 3: Cross multiply
    51,104x = 70,524.60 × 28,748
  4. Step 4: Simplify right side
    51,104x = 2,027,441,200.80
  5. Step 5: Solve for x
    x = 2,027,441,200.80/51,104
  6. Step 6: Final answer
    x = 39,672.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.