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Finding the Fourth Proportional to 84,083.79, 126,125.37 and 27,928.20

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Solution

The fourth proportional to 84,083.79, 126,125.37 and 27,928.20 is: 41,892.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,083.79 : 126,125.37 = 27,928.20 : x
  2. Step 2: Convert to fraction form
    84,083.79/126,125.37 = 27,928.20/x
  3. Step 3: Cross multiply
    84,083.79x = 126,125.37 × 27,928.20
  4. Step 4: Simplify right side
    84,083.79x = 3,522,454,558.43
  5. Step 5: Solve for x
    x = 3,522,454,558.43/84,083.79
  6. Step 6: Final answer
    x = 41,892.20

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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.