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Finding the Fourth Proportional to 73,130.20, 109,622.40 and 33,618.40

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Solution

The fourth proportional to 73,130.20, 109,622.40 and 33,618.40 is: 50,394.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,130.20 : 109,622.40 = 33,618.40 : x
  2. Step 2: Convert to fraction form
    73,130.20/109,622.40 = 33,618.40/x
  3. Step 3: Cross multiply
    73,130.20x = 109,622.40 × 33,618.40
  4. Step 4: Simplify right side
    73,130.20x = 3,685,329,692.16
  5. Step 5: Solve for x
    x = 3,685,329,692.16/73,130.20
  6. Step 6: Final answer
    x = 50,394.09

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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.