Home / 78,492.23-117,765.68-34,150.80

Finding the Fourth Proportional to 78,492.23, 117,765.68 and 34,150.80

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Solution

The fourth proportional to 78,492.23, 117,765.68 and 34,150.80 is: 51,238.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,492.23 : 117,765.68 = 34,150.80 : x
  2. Step 2: Convert to fraction form
    78,492.23/117,765.68 = 34,150.80/x
  3. Step 3: Cross multiply
    78,492.23x = 117,765.68 × 34,150.80
  4. Step 4: Simplify right side
    78,492.23x = 4,021,792,013.79
  5. Step 5: Solve for x
    x = 4,021,792,013.79/78,492.23
  6. Step 6: Final answer
    x = 51,238.09

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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.