Home / 40,131.80-60,234.70-20,424.50

Finding the Fourth Proportional to 40,131.80, 60,234.70 and 20,424.50

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Solution

The fourth proportional to 40,131.80, 60,234.70 and 20,424.50 is: 30,655.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,131.80 : 60,234.70 = 20,424.50 : x
  2. Step 2: Convert to fraction form
    40,131.80/60,234.70 = 20,424.50/x
  3. Step 3: Cross multiply
    40,131.80x = 60,234.70 × 20,424.50
  4. Step 4: Simplify right side
    40,131.80x = 1,230,263,630.15
  5. Step 5: Solve for x
    x = 1,230,263,630.15/40,131.80
  6. Step 6: Final answer
    x = 30,655.58

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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.