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Finding the Fourth Proportional to 72,702.53, 109,053.63 and 22,786.43

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Solution

The fourth proportional to 72,702.53, 109,053.63 and 22,786.43 is: 34,179.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,702.53 : 109,053.63 = 22,786.43 : x
  2. Step 2: Convert to fraction form
    72,702.53/109,053.63 = 22,786.43/x
  3. Step 3: Cross multiply
    72,702.53x = 109,053.63 × 22,786.43
  4. Step 4: Simplify right side
    72,702.53x = 2,484,942,906.24
  5. Step 5: Solve for x
    x = 2,484,942,906.24/72,702.53
  6. Step 6: Final answer
    x = 34,179.59

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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.