Home / 78,229.59-117,354.23-38,249.91

Finding the Fourth Proportional to 78,229.59, 117,354.23 and 38,249.91

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Solution

The fourth proportional to 78,229.59, 117,354.23 and 38,249.91 is: 57,379.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,229.59 : 117,354.23 = 38,249.91 : x
  2. Step 2: Convert to fraction form
    78,229.59/117,354.23 = 38,249.91/x
  3. Step 3: Cross multiply
    78,229.59x = 117,354.23 × 38,249.91
  4. Step 4: Simplify right side
    78,229.59x = 4,488,788,544.37
  5. Step 5: Solve for x
    x = 4,488,788,544.37/78,229.59
  6. Step 6: Final answer
    x = 57,379.68

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1.5x scale

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.