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Finding the Fourth Proportional to 72,396.10, 108,604.95 and 25,645.30

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Solution

The fourth proportional to 72,396.10, 108,604.95 and 25,645.30 is: 38,471.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,396.10 : 108,604.95 = 25,645.30 : x
  2. Step 2: Convert to fraction form
    72,396.10/108,604.95 = 25,645.30/x
  3. Step 3: Cross multiply
    72,396.10x = 108,604.95 × 25,645.30
  4. Step 4: Simplify right side
    72,396.10x = 2,785,206,524.24
  5. Step 5: Solve for x
    x = 2,785,206,524.24/72,396.10
  6. Step 6: Final answer
    x = 38,471.78

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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.