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Finding the Fourth Proportional to 72,505.46, 108,797.82 and 28,133.96

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Solution

The fourth proportional to 72,505.46, 108,797.82 and 28,133.96 is: 42,216.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,505.46 : 108,797.82 = 28,133.96 : x
  2. Step 2: Convert to fraction form
    72,505.46/108,797.82 = 28,133.96/x
  3. Step 3: Cross multiply
    72,505.46x = 108,797.82 × 28,133.96
  4. Step 4: Simplify right side
    72,505.46x = 3,060,913,515.97
  5. Step 5: Solve for x
    x = 3,060,913,515.97/72,505.46
  6. Step 6: Final answer
    x = 42,216.32

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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.