Home / 55,063.80-75,987.92-31,190.42

Finding the Fourth Proportional to 55,063.80, 75,987.92 and 31,190.42

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Solution

The fourth proportional to 55,063.80, 75,987.92 and 31,190.42 is: 43,042.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,063.80 : 75,987.92 = 31,190.42 : x
  2. Step 2: Convert to fraction form
    55,063.80/75,987.92 = 31,190.42/x
  3. Step 3: Cross multiply
    55,063.80x = 75,987.92 × 31,190.42
  4. Step 4: Simplify right side
    55,063.80x = 2,370,094,980.24
  5. Step 5: Solve for x
    x = 2,370,094,980.24/55,063.80
  6. Step 6: Final answer
    x = 43,042.71

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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.