Home / 82,439.80-123,531.81-57,188.62

Finding the Fourth Proportional to 82,439.80, 123,531.81 and 57,188.62

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Solution

The fourth proportional to 82,439.80, 123,531.81 and 57,188.62 is: 85,694.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,439.80 : 123,531.81 = 57,188.62 : x
  2. Step 2: Convert to fraction form
    82,439.80/123,531.81 = 57,188.62/x
  3. Step 3: Cross multiply
    82,439.80x = 123,531.81 × 57,188.62
  4. Step 4: Simplify right side
    82,439.80x = 7,064,613,740.00
  5. Step 5: Solve for x
    x = 7,064,613,740.00/82,439.80
  6. Step 6: Final answer
    x = 85,694.21

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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.