Home / 77,891.24-107,486.80-43,906.78

Finding the Fourth Proportional to 77,891.24, 107,486.80 and 43,906.78

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Solution

The fourth proportional to 77,891.24, 107,486.80 and 43,906.78 is: 60,589.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,891.24 : 107,486.80 = 43,906.78 : x
  2. Step 2: Convert to fraction form
    77,891.24/107,486.80 = 43,906.78/x
  3. Step 3: Cross multiply
    77,891.24x = 107,486.80 × 43,906.78
  4. Step 4: Simplify right side
    77,891.24x = 4,719,398,902.02
  5. Step 5: Solve for x
    x = 4,719,398,902.02/77,891.24
  6. Step 6: Final answer
    x = 60,589.60

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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.