Home / 81,027.40-121,540.30-25,623.40

Finding the Fourth Proportional to 81,027.40, 121,540.30 and 25,623.40

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Solution

The fourth proportional to 81,027.40, 121,540.30 and 25,623.40 is: 38,434.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,027.40 : 121,540.30 = 25,623.40 : x
  2. Step 2: Convert to fraction form
    81,027.40/121,540.30 = 25,623.40/x
  3. Step 3: Cross multiply
    81,027.40x = 121,540.30 × 25,623.40
  4. Step 4: Simplify right side
    81,027.40x = 3,114,275,723.02
  5. Step 5: Solve for x
    x = 3,114,275,723.02/81,027.40
  6. Step 6: Final answer
    x = 38,434.85

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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.