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Finding the Fourth Proportional to 72,072.30, 108,108.45 and 25,329.90

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Solution

The fourth proportional to 72,072.30, 108,108.45 and 25,329.90 is: 37,994.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,072.30 : 108,108.45 = 25,329.90 : x
  2. Step 2: Convert to fraction form
    72,072.30/108,108.45 = 25,329.90/x
  3. Step 3: Cross multiply
    72,072.30x = 108,108.45 × 25,329.90
  4. Step 4: Simplify right side
    72,072.30x = 2,738,376,227.66
  5. Step 5: Solve for x
    x = 2,738,376,227.66/72,072.30
  6. Step 6: Final answer
    x = 37,994.85

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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.