Home / 31,361.91-43,219.65-30,785.47

Finding the Fourth Proportional to 31,361.91, 43,219.65 and 30,785.47

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Solution

The fourth proportional to 31,361.91, 43,219.65 and 30,785.47 is: 42,425.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,361.91 : 43,219.65 = 30,785.47 : x
  2. Step 2: Convert to fraction form
    31,361.91/43,219.65 = 30,785.47/x
  3. Step 3: Cross multiply
    31,361.91x = 43,219.65 × 30,785.47
  4. Step 4: Simplify right side
    31,361.91x = 1,330,537,130.44
  5. Step 5: Solve for x
    x = 1,330,537,130.44/31,361.91
  6. Step 6: Final answer
    x = 42,425.26

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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.