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Finding the Fourth Proportional to 51,179.89, 70,627.53 and 28,519.84

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Solution

The fourth proportional to 51,179.89, 70,627.53 and 28,519.84 is: 39,356.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,179.89 : 70,627.53 = 28,519.84 : x
  2. Step 2: Convert to fraction form
    51,179.89/70,627.53 = 28,519.84/x
  3. Step 3: Cross multiply
    51,179.89x = 70,627.53 × 28,519.84
  4. Step 4: Simplify right side
    51,179.89x = 2,014,285,571.68
  5. Step 5: Solve for x
    x = 2,014,285,571.68/51,179.89
  6. Step 6: Final answer
    x = 39,356.97

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1.5x scale

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.