Home / 40,137.81-55,387.74-22,231.77

Finding the Fourth Proportional to 40,137.81, 55,387.74 and 22,231.77

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Solution

The fourth proportional to 40,137.81, 55,387.74 and 22,231.77 is: 30,678.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,137.81 : 55,387.74 = 22,231.77 : x
  2. Step 2: Convert to fraction form
    40,137.81/55,387.74 = 22,231.77/x
  3. Step 3: Cross multiply
    40,137.81x = 55,387.74 × 22,231.77
  4. Step 4: Simplify right side
    40,137.81x = 1,231,367,496.50
  5. Step 5: Solve for x
    x = 1,231,367,496.50/40,137.81
  6. Step 6: Final answer
    x = 30,678.49

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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.