Home / 77,825.10-107,403.87-43,375.20

Finding the Fourth Proportional to 77,825.10, 107,403.87 and 43,375.20

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Solution

The fourth proportional to 77,825.10, 107,403.87 and 43,375.20 is: 59,860.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,825.10 : 107,403.87 = 43,375.20 : x
  2. Step 2: Convert to fraction form
    77,825.10/107,403.87 = 43,375.20/x
  3. Step 3: Cross multiply
    77,825.10x = 107,403.87 × 43,375.20
  4. Step 4: Simplify right side
    77,825.10x = 4,658,664,101.92
  5. Step 5: Solve for x
    x = 4,658,664,101.92/77,825.10
  6. Step 6: Final answer
    x = 59,860.69

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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.