Home / 79,469.17-109,629.56-57,912.70

Finding the Fourth Proportional to 79,469.17, 109,629.56 and 57,912.70

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Solution

The fourth proportional to 79,469.17, 109,629.56 and 57,912.70 is: 79,891.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,469.17 : 109,629.56 = 57,912.70 : x
  2. Step 2: Convert to fraction form
    79,469.17/109,629.56 = 57,912.70/x
  3. Step 3: Cross multiply
    79,469.17x = 109,629.56 × 57,912.70
  4. Step 4: Simplify right side
    79,469.17x = 6,348,943,271.26
  5. Step 5: Solve for x
    x = 6,348,943,271.26/79,469.17
  6. Step 6: Final answer
    x = 79,891.91

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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.