Home / 81,149.82-121,724.73-25,741.50

Finding the Fourth Proportional to 81,149.82, 121,724.73 and 25,741.50

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Solution

The fourth proportional to 81,149.82, 121,724.73 and 25,741.50 is: 38,612.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,149.82 : 121,724.73 = 25,741.50 : x
  2. Step 2: Convert to fraction form
    81,149.82/121,724.73 = 25,741.50/x
  3. Step 3: Cross multiply
    81,149.82x = 121,724.73 × 25,741.50
  4. Step 4: Simplify right side
    81,149.82x = 3,133,377,137.30
  5. Step 5: Solve for x
    x = 3,133,377,137.30/81,149.82
  6. Step 6: Final answer
    x = 38,612.25

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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.