Home / 40,195.80-55,406.28-31,684.11

Finding the Fourth Proportional to 40,195.80, 55,406.28 and 31,684.11

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Solution

The fourth proportional to 40,195.80, 55,406.28 and 31,684.11 is: 43,673.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,195.80 : 55,406.28 = 31,684.11 : x
  2. Step 2: Convert to fraction form
    40,195.80/55,406.28 = 31,684.11/x
  3. Step 3: Cross multiply
    40,195.80x = 55,406.28 × 31,684.11
  4. Step 4: Simplify right side
    40,195.80x = 1,755,498,670.21
  5. Step 5: Solve for x
    x = 1,755,498,670.21/40,195.80
  6. Step 6: Final answer
    x = 43,673.68

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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.