Home / 82,039.11-123,061.32-25,879.74

Finding the Fourth Proportional to 82,039.11, 123,061.32 and 25,879.74

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Solution

The fourth proportional to 82,039.11, 123,061.32 and 25,879.74 is: 38,820.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,039.11 : 123,061.32 = 25,879.74 : x
  2. Step 2: Convert to fraction form
    82,039.11/123,061.32 = 25,879.74/x
  3. Step 3: Cross multiply
    82,039.11x = 123,061.32 × 25,879.74
  4. Step 4: Simplify right side
    82,039.11x = 3,184,794,965.66
  5. Step 5: Solve for x
    x = 3,184,794,965.66/82,039.11
  6. Step 6: Final answer
    x = 38,820.45

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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.