Home / 57,657.20-86,680.20-49,103.60

Finding the Fourth Proportional to 57,657.20, 86,680.20 and 49,103.60

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Solution

The fourth proportional to 57,657.20, 86,680.20 and 49,103.60 is: 73,820.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,657.20 : 86,680.20 = 49,103.60 : x
  2. Step 2: Convert to fraction form
    57,657.20/86,680.20 = 49,103.60/x
  3. Step 3: Cross multiply
    57,657.20x = 86,680.20 × 49,103.60
  4. Step 4: Simplify right side
    57,657.20x = 4,256,309,868.72
  5. Step 5: Solve for x
    x = 4,256,309,868.72/57,657.20
  6. Step 6: Final answer
    x = 73,820.96

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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.