Home / 79,284.78-109,470.40-51,039.68

Finding the Fourth Proportional to 79,284.78, 109,470.40 and 51,039.68

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Solution

The fourth proportional to 79,284.78, 109,470.40 and 51,039.68 is: 70,471.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,284.78 : 109,470.40 = 51,039.68 : x
  2. Step 2: Convert to fraction form
    79,284.78/109,470.40 = 51,039.68/x
  3. Step 3: Cross multiply
    79,284.78x = 109,470.40 × 51,039.68
  4. Step 4: Simplify right side
    79,284.78x = 5,587,334,185.47
  5. Step 5: Solve for x
    x = 5,587,334,185.47/79,284.78
  6. Step 6: Final answer
    x = 70,471.71

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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.