Home / 75,928.80-113,893.20-19,768.80

Finding the Fourth Proportional to 75,928.80, 113,893.20 and 19,768.80

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Solution

The fourth proportional to 75,928.80, 113,893.20 and 19,768.80 is: 29,653.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,928.80 : 113,893.20 = 19,768.80 : x
  2. Step 2: Convert to fraction form
    75,928.80/113,893.20 = 19,768.80/x
  3. Step 3: Cross multiply
    75,928.80x = 113,893.20 × 19,768.80
  4. Step 4: Simplify right side
    75,928.80x = 2,251,531,892.16
  5. Step 5: Solve for x
    x = 2,251,531,892.16/75,928.80
  6. Step 6: Final answer
    x = 29,653.20

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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.