Home / 53,869.56-80,771.31-20,553.90

Finding the Fourth Proportional to 53,869.56, 80,771.31 and 20,553.90

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Solution

The fourth proportional to 53,869.56, 80,771.31 and 20,553.90 is: 30,818.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,869.56 : 80,771.31 = 20,553.90 : x
  2. Step 2: Convert to fraction form
    53,869.56/80,771.31 = 20,553.90/x
  3. Step 3: Cross multiply
    53,869.56x = 80,771.31 × 20,553.90
  4. Step 4: Simplify right side
    53,869.56x = 1,660,165,428.61
  5. Step 5: Solve for x
    x = 1,660,165,428.61/53,869.56
  6. Step 6: Final answer
    x = 30,818.25

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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.