Home / 88,245.78-121,782.12-51,940.65

Finding the Fourth Proportional to 88,245.78, 121,782.12 and 51,940.65

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Solution

The fourth proportional to 88,245.78, 121,782.12 and 51,940.65 is: 71,679.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,245.78 : 121,782.12 = 51,940.65 : x
  2. Step 2: Convert to fraction form
    88,245.78/121,782.12 = 51,940.65/x
  3. Step 3: Cross multiply
    88,245.78x = 121,782.12 × 51,940.65
  4. Step 4: Simplify right side
    88,245.78x = 6,325,442,471.18
  5. Step 5: Solve for x
    x = 6,325,442,471.18/88,245.78
  6. Step 6: Final answer
    x = 71,679.83

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1.5x scale

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.