Home / 54,104.75-81,131.58-31,621.88

Finding the Fourth Proportional to 54,104.75, 81,131.58 and 31,621.88

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Solution

The fourth proportional to 54,104.75, 81,131.58 and 31,621.88 is: 47,417.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,104.75 : 81,131.58 = 31,621.88 : x
  2. Step 2: Convert to fraction form
    54,104.75/81,131.58 = 31,621.88/x
  3. Step 3: Cross multiply
    54,104.75x = 81,131.58 × 31,621.88
  4. Step 4: Simplify right side
    54,104.75x = 2,565,532,681.31
  5. Step 5: Solve for x
    x = 2,565,532,681.31/54,104.75
  6. Step 6: Final answer
    x = 47,417.88

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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.