Home / 54,456.60-81,687.30-30,763.80

Finding the Fourth Proportional to 54,456.60, 81,687.30 and 30,763.80

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Solution

The fourth proportional to 54,456.60, 81,687.30 and 30,763.80 is: 46,147.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,456.60 : 81,687.30 = 30,763.80 : x
  2. Step 2: Convert to fraction form
    54,456.60/81,687.30 = 30,763.80/x
  3. Step 3: Cross multiply
    54,456.60x = 81,687.30 × 30,763.80
  4. Step 4: Simplify right side
    54,456.60x = 2,513,011,759.74
  5. Step 5: Solve for x
    x = 2,513,011,759.74/54,456.60
  6. Step 6: Final answer
    x = 46,147.06

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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.