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Finding the Fourth Proportional to 72,797.52, 109,222.55 and 25,419.59

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Solution

The fourth proportional to 72,797.52, 109,222.55 and 25,419.59 is: 38,138.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,797.52 : 109,222.55 = 25,419.59 : x
  2. Step 2: Convert to fraction form
    72,797.52/109,222.55 = 25,419.59/x
  3. Step 3: Cross multiply
    72,797.52x = 109,222.55 × 25,419.59
  4. Step 4: Simplify right side
    72,797.52x = 2,776,392,439.75
  5. Step 5: Solve for x
    x = 2,776,392,439.75/72,797.52
  6. Step 6: Final answer
    x = 38,138.56

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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.