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Finding the Fourth Proportional to 72,806.13, 109,209.10 and 22,890.58

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Solution

The fourth proportional to 72,806.13, 109,209.10 and 22,890.58 is: 34,335.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,806.13 : 109,209.10 = 22,890.58 : x
  2. Step 2: Convert to fraction form
    72,806.13/109,209.10 = 22,890.58/x
  3. Step 3: Cross multiply
    72,806.13x = 109,209.10 × 22,890.58
  4. Step 4: Simplify right side
    72,806.13x = 2,499,859,583.05
  5. Step 5: Solve for x
    x = 2,499,859,583.05/72,806.13
  6. Step 6: Final answer
    x = 34,335.84

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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.