Home / 81,886.32-122,831-25,725.37

Finding the Fourth Proportional to 81,886.32, 122,831 and 25,725.37

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Solution

The fourth proportional to 81,886.32, 122,831 and 25,725.37 is: 38,588.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,886.32 : 122,831 = 25,725.37 : x
  2. Step 2: Convert to fraction form
    81,886.32/122,831 = 25,725.37/x
  3. Step 3: Cross multiply
    81,886.32x = 122,831 × 25,725.37
  4. Step 4: Simplify right side
    81,886.32x = 3,159,872,922.47
  5. Step 5: Solve for x
    x = 3,159,872,922.47/81,886.32
  6. Step 6: Final answer
    x = 38,588.53

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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.