Home / 68,769.90-102,979.80-45,325.26

Finding the Fourth Proportional to 68,769.90, 102,979.80 and 45,325.26

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Solution

The fourth proportional to 68,769.90, 102,979.80 and 45,325.26 is: 67,872.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,769.90 : 102,979.80 = 45,325.26 : x
  2. Step 2: Convert to fraction form
    68,769.90/102,979.80 = 45,325.26/x
  3. Step 3: Cross multiply
    68,769.90x = 102,979.80 × 45,325.26
  4. Step 4: Simplify right side
    68,769.90x = 4,667,586,209.75
  5. Step 5: Solve for x
    x = 4,667,586,209.75/68,769.90
  6. Step 6: Final answer
    x = 67,872.52

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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.