Home / 79,679.78-109,955.71-43,869.68

Finding the Fourth Proportional to 79,679.78, 109,955.71 and 43,869.68

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Solution

The fourth proportional to 79,679.78, 109,955.71 and 43,869.68 is: 60,538.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,679.78 : 109,955.71 = 43,869.68 : x
  2. Step 2: Convert to fraction form
    79,679.78/109,955.71 = 43,869.68/x
  3. Step 3: Cross multiply
    79,679.78x = 109,955.71 × 43,869.68
  4. Step 4: Simplify right side
    79,679.78x = 4,823,721,811.87
  5. Step 5: Solve for x
    x = 4,823,721,811.87/79,679.78
  6. Step 6: Final answer
    x = 60,538.84

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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.