Home / 31,936.81-43,753.64-30,739.68

Finding the Fourth Proportional to 31,936.81, 43,753.64 and 30,739.68

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Solution

The fourth proportional to 31,936.81, 43,753.64 and 30,739.68 is: 42,113.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,936.81 : 43,753.64 = 30,739.68 : x
  2. Step 2: Convert to fraction form
    31,936.81/43,753.64 = 30,739.68/x
  3. Step 3: Cross multiply
    31,936.81x = 43,753.64 × 30,739.68
  4. Step 4: Simplify right side
    31,936.81x = 1,344,973,018.09
  5. Step 5: Solve for x
    x = 1,344,973,018.09/31,936.81
  6. Step 6: Final answer
    x = 42,113.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.