Home / 82,705.80-123,921.90-47,584.20

Finding the Fourth Proportional to 82,705.80, 123,921.90 and 47,584.20

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Solution

The fourth proportional to 82,705.80, 123,921.90 and 47,584.20 is: 71,297.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,705.80 : 123,921.90 = 47,584.20 : x
  2. Step 2: Convert to fraction form
    82,705.80/123,921.90 = 47,584.20/x
  3. Step 3: Cross multiply
    82,705.80x = 123,921.90 × 47,584.20
  4. Step 4: Simplify right side
    82,705.80x = 5,896,724,473.98
  5. Step 5: Solve for x
    x = 5,896,724,473.98/82,705.80
  6. Step 6: Final answer
    x = 71,297.59

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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.