Home / 39,830.09-59,781.99-20,122.43

Finding the Fourth Proportional to 39,830.09, 59,781.99 and 20,122.43

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Solution

The fourth proportional to 39,830.09, 59,781.99 and 20,122.43 is: 30,202.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,830.09 : 59,781.99 = 20,122.43 : x
  2. Step 2: Convert to fraction form
    39,830.09/59,781.99 = 20,122.43/x
  3. Step 3: Cross multiply
    39,830.09x = 59,781.99 × 20,122.43
  4. Step 4: Simplify right side
    39,830.09x = 1,202,958,909.04
  5. Step 5: Solve for x
    x = 1,202,958,909.04/39,830.09
  6. Step 6: Final answer
    x = 30,202.26

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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.