Home / 85,438.16-117,906.44-47,197.60

Finding the Fourth Proportional to 85,438.16, 117,906.44 and 47,197.60

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Solution

The fourth proportional to 85,438.16, 117,906.44 and 47,197.60 is: 65,133.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,438.16 : 117,906.44 = 47,197.60 : x
  2. Step 2: Convert to fraction form
    85,438.16/117,906.44 = 47,197.60/x
  3. Step 3: Cross multiply
    85,438.16x = 117,906.44 × 47,197.60
  4. Step 4: Simplify right side
    85,438.16x = 5,564,900,992.54
  5. Step 5: Solve for x
    x = 5,564,900,992.54/85,438.16
  6. Step 6: Final answer
    x = 65,133.67

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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.