Home / 54,128.88-74,707.36-31,474.88

Finding the Fourth Proportional to 54,128.88, 74,707.36 and 31,474.88

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Solution

The fourth proportional to 54,128.88, 74,707.36 and 31,474.88 is: 43,440.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,128.88 : 74,707.36 = 31,474.88 : x
  2. Step 2: Convert to fraction form
    54,128.88/74,707.36 = 31,474.88/x
  3. Step 3: Cross multiply
    54,128.88x = 74,707.36 × 31,474.88
  4. Step 4: Simplify right side
    54,128.88x = 2,351,405,191.12
  5. Step 5: Solve for x
    x = 2,351,405,191.12/54,128.88
  6. Step 6: Final answer
    x = 43,440.86

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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.