Home / 78,269.45-117,394.61-33,308.91

Finding the Fourth Proportional to 78,269.45, 117,394.61 and 33,308.91

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Solution

The fourth proportional to 78,269.45, 117,394.61 and 33,308.91 is: 49,959.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,269.45 : 117,394.61 = 33,308.91 : x
  2. Step 2: Convert to fraction form
    78,269.45/117,394.61 = 33,308.91/x
  3. Step 3: Cross multiply
    78,269.45x = 117,394.61 × 33,308.91
  4. Step 4: Simplify right side
    78,269.45x = 3,910,286,332.43
  5. Step 5: Solve for x
    x = 3,910,286,332.43/78,269.45
  6. Step 6: Final answer
    x = 49,959.30

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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.