Home / 84,015.08-115,965.26-54,947.57

Finding the Fourth Proportional to 84,015.08, 115,965.26 and 54,947.57

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Solution

The fourth proportional to 84,015.08, 115,965.26 and 54,947.57 is: 75,843.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,015.08 : 115,965.26 = 54,947.57 : x
  2. Step 2: Convert to fraction form
    84,015.08/115,965.26 = 54,947.57/x
  3. Step 3: Cross multiply
    84,015.08x = 115,965.26 × 54,947.57
  4. Step 4: Simplify right side
    84,015.08x = 6,372,009,635.73
  5. Step 5: Solve for x
    x = 6,372,009,635.73/84,015.08
  6. Step 6: Final answer
    x = 75,843.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.