Home / 86,982.70-120,034.10-51,175.02

Finding the Fourth Proportional to 86,982.70, 120,034.10 and 51,175.02

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Solution

The fourth proportional to 86,982.70, 120,034.10 and 51,175.02 is: 70,620.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,982.70 : 120,034.10 = 51,175.02 : x
  2. Step 2: Convert to fraction form
    86,982.70/120,034.10 = 51,175.02/x
  3. Step 3: Cross multiply
    86,982.70x = 120,034.10 × 51,175.02
  4. Step 4: Simplify right side
    86,982.70x = 6,142,747,212.31
  5. Step 5: Solve for x
    x = 6,142,747,212.31/86,982.70
  6. Step 6: Final answer
    x = 70,620.33

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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.