Home / 78,286.11-117,427.79-54,248.24

Finding the Fourth Proportional to 78,286.11, 117,427.79 and 54,248.24

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Solution

The fourth proportional to 78,286.11, 117,427.79 and 54,248.24 is: 81,371.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,286.11 : 117,427.79 = 54,248.24 : x
  2. Step 2: Convert to fraction form
    78,286.11/117,427.79 = 54,248.24/x
  3. Step 3: Cross multiply
    78,286.11x = 117,427.79 × 54,248.24
  4. Step 4: Simplify right side
    78,286.11x = 6,370,250,956.92
  5. Step 5: Solve for x
    x = 6,370,250,956.92/78,286.11
  6. Step 6: Final answer
    x = 81,371.41

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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.