Home / 49,920.80-68,905.96-30,806.42

Finding the Fourth Proportional to 49,920.80, 68,905.96 and 30,806.42

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Solution

The fourth proportional to 49,920.80, 68,905.96 and 30,806.42 is: 42,522.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,920.80 : 68,905.96 = 30,806.42 : x
  2. Step 2: Convert to fraction form
    49,920.80/68,905.96 = 30,806.42/x
  3. Step 3: Cross multiply
    49,920.80x = 68,905.96 × 30,806.42
  4. Step 4: Simplify right side
    49,920.80x = 2,122,745,944.26
  5. Step 5: Solve for x
    x = 2,122,745,944.26/49,920.80
  6. Step 6: Final answer
    x = 42,522.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.