Home / 82,541.70-123,810.99-20,212.74

Finding the Fourth Proportional to 82,541.70, 123,810.99 and 20,212.74

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Solution

The fourth proportional to 82,541.70, 123,810.99 and 20,212.74 is: 30,318.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,541.70 : 123,810.99 = 20,212.74 : x
  2. Step 2: Convert to fraction form
    82,541.70/123,810.99 = 20,212.74/x
  3. Step 3: Cross multiply
    82,541.70x = 123,810.99 × 20,212.74
  4. Step 4: Simplify right side
    82,541.70x = 2,502,559,350.01
  5. Step 5: Solve for x
    x = 2,502,559,350.01/82,541.70
  6. Step 6: Final answer
    x = 30,318.73

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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.