Home / 72,418.50-108,622.89-19,828.44

Finding the Fourth Proportional to 72,418.50, 108,622.89 and 19,828.44

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Solution

The fourth proportional to 72,418.50, 108,622.89 and 19,828.44 is: 29,741.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,418.50 : 108,622.89 = 19,828.44 : x
  2. Step 2: Convert to fraction form
    72,418.50/108,622.89 = 19,828.44/x
  3. Step 3: Cross multiply
    72,418.50x = 108,622.89 × 19,828.44
  4. Step 4: Simplify right side
    72,418.50x = 2,153,822,456.99
  5. Step 5: Solve for x
    x = 2,153,822,456.99/72,418.50
  6. Step 6: Final answer
    x = 29,741.33

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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.