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Finding the Fourth Proportional to 67,520.99, 101,279.31 and 20,136.48

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Solution

The fourth proportional to 67,520.99, 101,279.31 and 20,136.48 is: 30,204.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,520.99 : 101,279.31 = 20,136.48 : x
  2. Step 2: Convert to fraction form
    67,520.99/101,279.31 = 20,136.48/x
  3. Step 3: Cross multiply
    67,520.99x = 101,279.31 × 20,136.48
  4. Step 4: Simplify right side
    67,520.99x = 2,039,408,800.23
  5. Step 5: Solve for x
    x = 2,039,408,800.23/67,520.99
  6. Step 6: Final answer
    x = 30,204.07

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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.