Home / 40,128.40-60,202.20-19,334.80

Finding the Fourth Proportional to 40,128.40, 60,202.20 and 19,334.80

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Solution

The fourth proportional to 40,128.40, 60,202.20 and 19,334.80 is: 29,006.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,128.40 : 60,202.20 = 19,334.80 : x
  2. Step 2: Convert to fraction form
    40,128.40/60,202.20 = 19,334.80/x
  3. Step 3: Cross multiply
    40,128.40x = 60,202.20 × 19,334.80
  4. Step 4: Simplify right side
    40,128.40x = 1,163,997,496.56
  5. Step 5: Solve for x
    x = 1,163,997,496.56/40,128.40
  6. Step 6: Final answer
    x = 29,006.83

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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.