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Finding the Fourth Proportional to 76,052.25, 114,078.39 and 20,648.25

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Solution

The fourth proportional to 76,052.25, 114,078.39 and 20,648.25 is: 30,972.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,052.25 : 114,078.39 = 20,648.25 : x
  2. Step 2: Convert to fraction form
    76,052.25/114,078.39 = 20,648.25/x
  3. Step 3: Cross multiply
    76,052.25x = 114,078.39 × 20,648.25
  4. Step 4: Simplify right side
    76,052.25x = 2,355,519,116.32
  5. Step 5: Solve for x
    x = 2,355,519,116.32/76,052.25
  6. Step 6: Final answer
    x = 30,972.38

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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.