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Finding the Fourth Proportional to 72,558, 108,846.32 and 25,811.28

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Solution

The fourth proportional to 72,558, 108,846.32 and 25,811.28 is: 38,720.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,558 : 108,846.32 = 25,811.28 : x
  2. Step 2: Convert to fraction form
    72,558/108,846.32 = 25,811.28/x
  3. Step 3: Cross multiply
    72,558x = 108,846.32 × 25,811.28
  4. Step 4: Simplify right side
    72,558x = 2,809,462,713.43
  5. Step 5: Solve for x
    x = 2,809,462,713.43/72,558
  6. Step 6: Final answer
    x = 38,720.23

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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.