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Finding the Fourth Proportional to 75,209.99, 112,809.31 and 21,902.37

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Solution

The fourth proportional to 75,209.99, 112,809.31 and 21,902.37 is: 32,851.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,209.99 : 112,809.31 = 21,902.37 : x
  2. Step 2: Convert to fraction form
    75,209.99/112,809.31 = 21,902.37/x
  3. Step 3: Cross multiply
    75,209.99x = 112,809.31 × 21,902.37
  4. Step 4: Simplify right side
    75,209.99x = 2,470,790,769.27
  5. Step 5: Solve for x
    x = 2,470,790,769.27/75,209.99
  6. Step 6: Final answer
    x = 32,851.90

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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.