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Finding the Fourth Proportional to 79,928.40, 119,892.60 and 27,339.60

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Solution

The fourth proportional to 79,928.40, 119,892.60 and 27,339.60 is: 41,009.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,928.40 : 119,892.60 = 27,339.60 : x
  2. Step 2: Convert to fraction form
    79,928.40/119,892.60 = 27,339.60/x
  3. Step 3: Cross multiply
    79,928.40x = 119,892.60 × 27,339.60
  4. Step 4: Simplify right side
    79,928.40x = 3,277,815,726.96
  5. Step 5: Solve for x
    x = 3,277,815,726.96/79,928.40
  6. Step 6: Final answer
    x = 41,009.40

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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.