Home / 40,136.80-60,242.22-20,429.56

Finding the Fourth Proportional to 40,136.80, 60,242.22 and 20,429.56

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Solution

The fourth proportional to 40,136.80, 60,242.22 and 20,429.56 is: 30,663.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,136.80 : 60,242.22 = 20,429.56 : x
  2. Step 2: Convert to fraction form
    40,136.80/60,242.22 = 20,429.56/x
  3. Step 3: Cross multiply
    40,136.80x = 60,242.22 × 20,429.56
  4. Step 4: Simplify right side
    40,136.80x = 1,230,722,048.02
  5. Step 5: Solve for x
    x = 1,230,722,048.02/40,136.80
  6. Step 6: Final answer
    x = 30,663.18

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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.