Home / 78,132.35-117,203.67-30,743.70

Finding the Fourth Proportional to 78,132.35, 117,203.67 and 30,743.70

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Solution

The fourth proportional to 78,132.35, 117,203.67 and 30,743.70 is: 46,117.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,132.35 : 117,203.67 = 30,743.70 : x
  2. Step 2: Convert to fraction form
    78,132.35/117,203.67 = 30,743.70/x
  3. Step 3: Cross multiply
    78,132.35x = 117,203.67 × 30,743.70
  4. Step 4: Simplify right side
    78,132.35x = 3,603,274,469.38
  5. Step 5: Solve for x
    x = 3,603,274,469.38/78,132.35
  6. Step 6: Final answer
    x = 46,117.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.