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Finding the Fourth Proportional to 73,217.70, 109,583.55 and 53,170.20

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Solution

The fourth proportional to 73,217.70, 109,583.55 and 53,170.20 is: 79,578.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,217.70 : 109,583.55 = 53,170.20 : x
  2. Step 2: Convert to fraction form
    73,217.70/109,583.55 = 53,170.20/x
  3. Step 3: Cross multiply
    73,217.70x = 109,583.55 × 53,170.20
  4. Step 4: Simplify right side
    73,217.70x = 5,826,579,270.21
  5. Step 5: Solve for x
    x = 5,826,579,270.21/73,217.70
  6. Step 6: Final answer
    x = 79,578.84

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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.