Home / 68,305.03-102,472.59-20,920.48

Finding the Fourth Proportional to 68,305.03, 102,472.59 and 20,920.48

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Solution

The fourth proportional to 68,305.03, 102,472.59 and 20,920.48 is: 31,385.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,305.03 : 102,472.59 = 20,920.48 : x
  2. Step 2: Convert to fraction form
    68,305.03/102,472.59 = 20,920.48/x
  3. Step 3: Cross multiply
    68,305.03x = 102,472.59 × 20,920.48
  4. Step 4: Simplify right side
    68,305.03x = 2,143,775,769.64
  5. Step 5: Solve for x
    x = 2,143,775,769.64/68,305.03
  6. Step 6: Final answer
    x = 31,385.33

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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.