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Finding the Fourth Proportional to 67,645.10, 101,467.65 and 20,902.70

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Solution

The fourth proportional to 67,645.10, 101,467.65 and 20,902.70 is: 31,354.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,645.10 : 101,467.65 = 20,902.70 : x
  2. Step 2: Convert to fraction form
    67,645.10/101,467.65 = 20,902.70/x
  3. Step 3: Cross multiply
    67,645.10x = 101,467.65 × 20,902.70
  4. Step 4: Simplify right side
    67,645.10x = 2,120,947,847.66
  5. Step 5: Solve for x
    x = 2,120,947,847.66/67,645.10
  6. Step 6: Final answer
    x = 31,354.05

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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.