Home / 39,776.12-54,892.46-21,872.50

Finding the Fourth Proportional to 39,776.12, 54,892.46 and 21,872.50

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Solution

The fourth proportional to 39,776.12, 54,892.46 and 21,872.50 is: 30,184.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,776.12 : 54,892.46 = 21,872.50 : x
  2. Step 2: Convert to fraction form
    39,776.12/54,892.46 = 21,872.50/x
  3. Step 3: Cross multiply
    39,776.12x = 54,892.46 × 21,872.50
  4. Step 4: Simplify right side
    39,776.12x = 1,200,635,331.35
  5. Step 5: Solve for x
    x = 1,200,635,331.35/39,776.12
  6. Step 6: Final answer
    x = 30,184.83

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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.