Home / 54,343.20-81,687.60-51,232.80

Finding the Fourth Proportional to 54,343.20, 81,687.60 and 51,232.80

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Solution

The fourth proportional to 54,343.20, 81,687.60 and 51,232.80 is: 77,012.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,343.20 : 81,687.60 = 51,232.80 : x
  2. Step 2: Convert to fraction form
    54,343.20/81,687.60 = 51,232.80/x
  3. Step 3: Cross multiply
    54,343.20x = 81,687.60 × 51,232.80
  4. Step 4: Simplify right side
    54,343.20x = 4,185,084,473.28
  5. Step 5: Solve for x
    x = 4,185,084,473.28/54,343.20
  6. Step 6: Final answer
    x = 77,012.11

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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.