Home / 40,405.11-55,811.61-30,786.36

Finding the Fourth Proportional to 40,405.11, 55,811.61 and 30,786.36

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Solution

The fourth proportional to 40,405.11, 55,811.61 and 30,786.36 is: 42,525.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,405.11 : 55,811.61 = 30,786.36 : x
  2. Step 2: Convert to fraction form
    40,405.11/55,811.61 = 30,786.36/x
  3. Step 3: Cross multiply
    40,405.11x = 55,811.61 × 30,786.36
  4. Step 4: Simplify right side
    40,405.11x = 1,718,236,317.64
  5. Step 5: Solve for x
    x = 1,718,236,317.64/40,405.11
  6. Step 6: Final answer
    x = 42,525.22

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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.