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Finding the Fourth Proportional to 67,609.92, 101,429.37 and 20,228.70

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Solution

The fourth proportional to 67,609.92, 101,429.37 and 20,228.70 is: 30,347.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,609.92 : 101,429.37 = 20,228.70 : x
  2. Step 2: Convert to fraction form
    67,609.92/101,429.37 = 20,228.70/x
  3. Step 3: Cross multiply
    67,609.92x = 101,429.37 × 20,228.70
  4. Step 4: Simplify right side
    67,609.92x = 2,051,784,296.92
  5. Step 5: Solve for x
    x = 2,051,784,296.92/67,609.92
  6. Step 6: Final answer
    x = 30,347.39

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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.