Home / 86,982.39-120,033.66-51,174.71

Finding the Fourth Proportional to 86,982.39, 120,033.66 and 51,174.71

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Solution

The fourth proportional to 86,982.39, 120,033.66 and 51,174.71 is: 70,619.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,982.39 : 120,033.66 = 51,174.71 : x
  2. Step 2: Convert to fraction form
    86,982.39/120,033.66 = 51,174.71/x
  3. Step 3: Cross multiply
    86,982.39x = 120,033.66 × 51,174.71
  4. Step 4: Simplify right side
    86,982.39x = 6,142,687,140.57
  5. Step 5: Solve for x
    x = 6,142,687,140.57/86,982.39
  6. Step 6: Final answer
    x = 70,619.89

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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.