Home / 31,928.58-43,742.36-30,731.45

Finding the Fourth Proportional to 31,928.58, 43,742.36 and 30,731.45

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Solution

The fourth proportional to 31,928.58, 43,742.36 and 30,731.45 is: 42,102.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,928.58 : 43,742.36 = 30,731.45 : x
  2. Step 2: Convert to fraction form
    31,928.58/43,742.36 = 30,731.45/x
  3. Step 3: Cross multiply
    31,928.58x = 43,742.36 × 30,731.45
  4. Step 4: Simplify right side
    31,928.58x = 1,344,266,007.34
  5. Step 5: Solve for x
    x = 1,344,266,007.34/31,928.58
  6. Step 6: Final answer
    x = 42,102.28

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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.