Home / 52,092.35-78,138.40-18,812.42

Finding the Fourth Proportional to 52,092.35, 78,138.40 and 18,812.42

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Solution

The fourth proportional to 52,092.35, 78,138.40 and 18,812.42 is: 28,218.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,092.35 : 78,138.40 = 18,812.42 : x
  2. Step 2: Convert to fraction form
    52,092.35/78,138.40 = 18,812.42/x
  3. Step 3: Cross multiply
    52,092.35x = 78,138.40 × 18,812.42
  4. Step 4: Simplify right side
    52,092.35x = 1,469,971,914.17
  5. Step 5: Solve for x
    x = 1,469,971,914.17/52,092.35
  6. Step 6: Final answer
    x = 28,218.58

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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.