Home / 45,259.76-67,912.25-20,317.56

Finding the Fourth Proportional to 45,259.76, 67,912.25 and 20,317.56

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Solution

The fourth proportional to 45,259.76, 67,912.25 and 20,317.56 is: 30,486.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,259.76 : 67,912.25 = 20,317.56 : x
  2. Step 2: Convert to fraction form
    45,259.76/67,912.25 = 20,317.56/x
  3. Step 3: Cross multiply
    45,259.76x = 67,912.25 × 20,317.56
  4. Step 4: Simplify right side
    45,259.76x = 1,379,811,112.52
  5. Step 5: Solve for x
    x = 1,379,811,112.52/45,259.76
  6. Step 6: Final answer
    x = 30,486.49

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1.5x scale

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.