Home / 78,226.07-117,348.21-28,329.66

Finding the Fourth Proportional to 78,226.07, 117,348.21 and 28,329.66

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Solution

The fourth proportional to 78,226.07, 117,348.21 and 28,329.66 is: 42,497.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,226.07 : 117,348.21 = 28,329.66 : x
  2. Step 2: Convert to fraction form
    78,226.07/117,348.21 = 28,329.66/x
  3. Step 3: Cross multiply
    78,226.07x = 117,348.21 × 28,329.66
  4. Step 4: Simplify right side
    78,226.07x = 3,324,434,890.91
  5. Step 5: Solve for x
    x = 3,324,434,890.91/78,226.07
  6. Step 6: Final answer
    x = 42,497.79

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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.