Home / 78,429.43-117,578.43-54,667.27

Finding the Fourth Proportional to 78,429.43, 117,578.43 and 54,667.27

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Solution

The fourth proportional to 78,429.43, 117,578.43 and 54,667.27 is: 81,955.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,429.43 : 117,578.43 = 54,667.27 : x
  2. Step 2: Convert to fraction form
    78,429.43/117,578.43 = 54,667.27/x
  3. Step 3: Cross multiply
    78,429.43x = 117,578.43 × 54,667.27
  4. Step 4: Simplify right side
    78,429.43x = 6,427,691,778.99
  5. Step 5: Solve for x
    x = 6,427,691,778.99/78,429.43
  6. Step 6: Final answer
    x = 81,955.10

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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.