Home / 52,388.35-78,553.80-20,766.38

Finding the Fourth Proportional to 52,388.35, 78,553.80 and 20,766.38

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Solution

The fourth proportional to 52,388.35, 78,553.80 and 20,766.38 is: 31,138.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,388.35 : 78,553.80 = 20,766.38 : x
  2. Step 2: Convert to fraction form
    52,388.35/78,553.80 = 20,766.38/x
  3. Step 3: Cross multiply
    52,388.35x = 78,553.80 × 20,766.38
  4. Step 4: Simplify right side
    52,388.35x = 1,631,277,668.48
  5. Step 5: Solve for x
    x = 1,631,277,668.48/52,388.35
  6. Step 6: Final answer
    x = 31,138.18

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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.