Home / 81,640.71-122,435.15-26,223.75

Finding the Fourth Proportional to 81,640.71, 122,435.15 and 26,223.75

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Solution

The fourth proportional to 81,640.71, 122,435.15 and 26,223.75 is: 39,327.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,640.71 : 122,435.15 = 26,223.75 : x
  2. Step 2: Convert to fraction form
    81,640.71/122,435.15 = 26,223.75/x
  3. Step 3: Cross multiply
    81,640.71x = 122,435.15 × 26,223.75
  4. Step 4: Simplify right side
    81,640.71x = 3,210,708,633.69
  5. Step 5: Solve for x
    x = 3,210,708,633.69/81,640.71
  6. Step 6: Final answer
    x = 39,327.30

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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.