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Finding the Fourth Proportional to 76,951.60, 115,427.40 and 27,039.40

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Solution

The fourth proportional to 76,951.60, 115,427.40 and 27,039.40 is: 40,559.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,951.60 : 115,427.40 = 27,039.40 : x
  2. Step 2: Convert to fraction form
    76,951.60/115,427.40 = 27,039.40/x
  3. Step 3: Cross multiply
    76,951.60x = 115,427.40 × 27,039.40
  4. Step 4: Simplify right side
    76,951.60x = 3,121,087,639.56
  5. Step 5: Solve for x
    x = 3,121,087,639.56/76,951.60
  6. Step 6: Final answer
    x = 40,559.10

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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.