Home / 57,698.20-86,571.60-31,421.80

Finding the Fourth Proportional to 57,698.20, 86,571.60 and 31,421.80

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Solution

The fourth proportional to 57,698.20, 86,571.60 and 31,421.80 is: 47,145.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,698.20 : 86,571.60 = 31,421.80 : x
  2. Step 2: Convert to fraction form
    57,698.20/86,571.60 = 31,421.80/x
  3. Step 3: Cross multiply
    57,698.20x = 86,571.60 × 31,421.80
  4. Step 4: Simplify right side
    57,698.20x = 2,720,235,500.88
  5. Step 5: Solve for x
    x = 2,720,235,500.88/57,698.20
  6. Step 6: Final answer
    x = 47,145.93

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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.