Home / 39,825.78-54,965.86-29,105.90

Finding the Fourth Proportional to 39,825.78, 54,965.86 and 29,105.90

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Solution

The fourth proportional to 39,825.78, 54,965.86 and 29,105.90 is: 40,170.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,825.78 : 54,965.86 = 29,105.90 : x
  2. Step 2: Convert to fraction form
    39,825.78/54,965.86 = 29,105.90/x
  3. Step 3: Cross multiply
    39,825.78x = 54,965.86 × 29,105.90
  4. Step 4: Simplify right side
    39,825.78x = 1,599,830,683.10
  5. Step 5: Solve for x
    x = 1,599,830,683.10/39,825.78
  6. Step 6: Final answer
    x = 40,170.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.