Home / 81,725.94-122,588.91-25,564.86

Finding the Fourth Proportional to 81,725.94, 122,588.91 and 25,564.86

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Solution

The fourth proportional to 81,725.94, 122,588.91 and 25,564.86 is: 38,347.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,725.94 : 122,588.91 = 25,564.86 : x
  2. Step 2: Convert to fraction form
    81,725.94/122,588.91 = 25,564.86/x
  3. Step 3: Cross multiply
    81,725.94x = 122,588.91 × 25,564.86
  4. Step 4: Simplify right side
    81,725.94x = 3,133,968,321.70
  5. Step 5: Solve for x
    x = 3,133,968,321.70/81,725.94
  6. Step 6: Final answer
    x = 38,347.29

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1.5x scale

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.