Home / 57,811.20-86,619.60-47,896.80

Finding the Fourth Proportional to 57,811.20, 86,619.60 and 47,896.80

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Solution

The fourth proportional to 57,811.20, 86,619.60 and 47,896.80 is: 71,764.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,811.20 : 86,619.60 = 47,896.80 : x
  2. Step 2: Convert to fraction form
    57,811.20/86,619.60 = 47,896.80/x
  3. Step 3: Cross multiply
    57,811.20x = 86,619.60 × 47,896.80
  4. Step 4: Simplify right side
    57,811.20x = 4,148,801,657.28
  5. Step 5: Solve for x
    x = 4,148,801,657.28/57,811.20
  6. Step 6: Final answer
    x = 71,764.67

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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.