Home / 90,871.80-136,297.97-31,708.59

Finding the Fourth Proportional to 90,871.80, 136,297.97 and 31,708.59

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Solution

The fourth proportional to 90,871.80, 136,297.97 and 31,708.59 is: 47,559.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,871.80 : 136,297.97 = 31,708.59 : x
  2. Step 2: Convert to fraction form
    90,871.80/136,297.97 = 31,708.59/x
  3. Step 3: Cross multiply
    90,871.80x = 136,297.97 × 31,708.59
  4. Step 4: Simplify right side
    90,871.80x = 4,321,816,448.56
  5. Step 5: Solve for x
    x = 4,321,816,448.56/90,871.80
  6. Step 6: Final answer
    x = 47,559.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.