Home / 40,310.40-60,415.20-20,596.80

Finding the Fourth Proportional to 40,310.40, 60,415.20 and 20,596.80

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Solution

The fourth proportional to 40,310.40, 60,415.20 and 20,596.80 is: 30,869.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,310.40 : 60,415.20 = 20,596.80 : x
  2. Step 2: Convert to fraction form
    40,310.40/60,415.20 = 20,596.80/x
  3. Step 3: Cross multiply
    40,310.40x = 60,415.20 × 20,596.80
  4. Step 4: Simplify right side
    40,310.40x = 1,244,359,791.36
  5. Step 5: Solve for x
    x = 1,244,359,791.36/40,310.40
  6. Step 6: Final answer
    x = 30,869.45

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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.