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Finding the Fourth Proportional to 85,344.67, 117,724.83 and 55,147.73

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Solution

The fourth proportional to 85,344.67, 117,724.83 and 55,147.73 is: 76,071.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,344.67 : 117,724.83 = 55,147.73 : x
  2. Step 2: Convert to fraction form
    85,344.67/117,724.83 = 55,147.73/x
  3. Step 3: Cross multiply
    85,344.67x = 117,724.83 × 55,147.73
  4. Step 4: Simplify right side
    85,344.67x = 6,492,257,139.14
  5. Step 5: Solve for x
    x = 6,492,257,139.14/85,344.67
  6. Step 6: Final answer
    x = 76,071.04

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1.5x scale

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.