Home / 45,814.80-68,725.40-18,109.20

Finding the Fourth Proportional to 45,814.80, 68,725.40 and 18,109.20

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Solution

The fourth proportional to 45,814.80, 68,725.40 and 18,109.20 is: 27,165.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,814.80 : 68,725.40 = 18,109.20 : x
  2. Step 2: Convert to fraction form
    45,814.80/68,725.40 = 18,109.20/x
  3. Step 3: Cross multiply
    45,814.80x = 68,725.40 × 18,109.20
  4. Step 4: Simplify right side
    45,814.80x = 1,244,562,013.68
  5. Step 5: Solve for x
    x = 1,244,562,013.68/45,814.80
  6. Step 6: Final answer
    x = 27,165.06

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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.