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Finding the Fourth Proportional to 75,768.39, 113,652.57 and 20,364.39

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Solution

The fourth proportional to 75,768.39, 113,652.57 and 20,364.39 is: 30,546.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,768.39 : 113,652.57 = 20,364.39 : x
  2. Step 2: Convert to fraction form
    75,768.39/113,652.57 = 20,364.39/x
  3. Step 3: Cross multiply
    75,768.39x = 113,652.57 × 20,364.39
  4. Step 4: Simplify right side
    75,768.39x = 2,314,465,259.98
  5. Step 5: Solve for x
    x = 2,314,465,259.98/75,768.39
  6. Step 6: Final answer
    x = 30,546.58

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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.