Home / 40,136.69-55,387.89-22,231.64

Finding the Fourth Proportional to 40,136.69, 55,387.89 and 22,231.64

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Solution

The fourth proportional to 40,136.69, 55,387.89 and 22,231.64 is: 30,679.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,136.69 : 55,387.89 = 22,231.64 : x
  2. Step 2: Convert to fraction form
    40,136.69/55,387.89 = 22,231.64/x
  3. Step 3: Cross multiply
    40,136.69x = 55,387.89 × 22,231.64
  4. Step 4: Simplify right side
    40,136.69x = 1,231,363,353.90
  5. Step 5: Solve for x
    x = 1,231,363,353.90/40,136.69
  6. Step 6: Final answer
    x = 30,679.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.