Home / 73,123.20-109,692.20-20,532.88

Finding the Fourth Proportional to 73,123.20, 109,692.20 and 20,532.88

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Solution

The fourth proportional to 73,123.20, 109,692.20 and 20,532.88 is: 30,801.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,123.20 : 109,692.20 = 20,532.88 : x
  2. Step 2: Convert to fraction form
    73,123.20/109,692.20 = 20,532.88/x
  3. Step 3: Cross multiply
    73,123.20x = 109,692.20 × 20,532.88
  4. Step 4: Simplify right side
    73,123.20x = 2,252,296,779.54
  5. Step 5: Solve for x
    x = 2,252,296,779.54/73,123.20
  6. Step 6: Final answer
    x = 30,801.40

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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.