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Finding the Fourth Proportional to 72,523.76, 108,786.84 and 19,932.92

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Solution

The fourth proportional to 72,523.76, 108,786.84 and 19,932.92 is: 29,899.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,523.76 : 108,786.84 = 19,932.92 : x
  2. Step 2: Convert to fraction form
    72,523.76/108,786.84 = 19,932.92/x
  3. Step 3: Cross multiply
    72,523.76x = 108,786.84 × 19,932.92
  4. Step 4: Simplify right side
    72,523.76x = 2,168,439,378.77
  5. Step 5: Solve for x
    x = 2,168,439,378.77/72,523.76
  6. Step 6: Final answer
    x = 29,899.71

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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.