Home / 82,716.82-124,075.24-20,387.32

Finding the Fourth Proportional to 82,716.82, 124,075.24 and 20,387.32

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Solution

The fourth proportional to 82,716.82, 124,075.24 and 20,387.32 is: 30,580.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,716.82 : 124,075.24 = 20,387.32 : x
  2. Step 2: Convert to fraction form
    82,716.82/124,075.24 = 20,387.32/x
  3. Step 3: Cross multiply
    82,716.82x = 124,075.24 × 20,387.32
  4. Step 4: Simplify right side
    82,716.82x = 2,529,561,724.44
  5. Step 5: Solve for x
    x = 2,529,561,724.44/82,716.82
  6. Step 6: Final answer
    x = 30,580.98

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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.