Home / 40,120.81-55,366.03-22,215.43

Finding the Fourth Proportional to 40,120.81, 55,366.03 and 22,215.43

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Solution

The fourth proportional to 40,120.81, 55,366.03 and 22,215.43 is: 30,656.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,120.81 : 55,366.03 = 22,215.43 : x
  2. Step 2: Convert to fraction form
    40,120.81/55,366.03 = 22,215.43/x
  3. Step 3: Cross multiply
    40,120.81x = 55,366.03 × 22,215.43
  4. Step 4: Simplify right side
    40,120.81x = 1,229,979,887.01
  5. Step 5: Solve for x
    x = 1,229,979,887.01/40,120.81
  6. Step 6: Final answer
    x = 30,656.91

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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.