Home / 79,620.57-109,839.65-51,335.37

Finding the Fourth Proportional to 79,620.57, 109,839.65 and 51,335.37

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Solution

The fourth proportional to 79,620.57, 109,839.65 and 51,335.37 is: 70,819.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,620.57 : 109,839.65 = 51,335.37 : x
  2. Step 2: Convert to fraction form
    79,620.57/109,839.65 = 51,335.37/x
  3. Step 3: Cross multiply
    79,620.57x = 109,839.65 × 51,335.37
  4. Step 4: Simplify right side
    79,620.57x = 5,638,658,816.74
  5. Step 5: Solve for x
    x = 5,638,658,816.74/79,620.57
  6. Step 6: Final answer
    x = 70,819.12

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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.