Home / 53,916.18-80,855.64-20,645.70

Finding the Fourth Proportional to 53,916.18, 80,855.64 and 20,645.70

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Solution

The fourth proportional to 53,916.18, 80,855.64 and 20,645.70 is: 30,961.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,916.18 : 80,855.64 = 20,645.70 : x
  2. Step 2: Convert to fraction form
    53,916.18/80,855.64 = 20,645.70/x
  3. Step 3: Cross multiply
    53,916.18x = 80,855.64 × 20,645.70
  4. Step 4: Simplify right side
    53,916.18x = 1,669,321,286.75
  5. Step 5: Solve for x
    x = 1,669,321,286.75/53,916.18
  6. Step 6: Final answer
    x = 30,961.42

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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.