Home / 82,515.40-123,662.24-45,019.29

Finding the Fourth Proportional to 82,515.40, 123,662.24 and 45,019.29

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Solution

The fourth proportional to 82,515.40, 123,662.24 and 45,019.29 is: 67,468.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,515.40 : 123,662.24 = 45,019.29 : x
  2. Step 2: Convert to fraction form
    82,515.40/123,662.24 = 45,019.29/x
  3. Step 3: Cross multiply
    82,515.40x = 123,662.24 × 45,019.29
  4. Step 4: Simplify right side
    82,515.40x = 5,567,185,710.36
  5. Step 5: Solve for x
    x = 5,567,185,710.36/82,515.40
  6. Step 6: Final answer
    x = 67,468.44

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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.