Home / 85,220.28-117,604.38-49,431.48

Finding the Fourth Proportional to 85,220.28, 117,604.38 and 49,431.48

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Solution

The fourth proportional to 85,220.28, 117,604.38 and 49,431.48 is: 68,215.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,220.28 : 117,604.38 = 49,431.48 : x
  2. Step 2: Convert to fraction form
    85,220.28/117,604.38 = 49,431.48/x
  3. Step 3: Cross multiply
    85,220.28x = 117,604.38 × 49,431.48
  4. Step 4: Simplify right side
    85,220.28x = 5,813,358,557.88
  5. Step 5: Solve for x
    x = 5,813,358,557.88/85,220.28
  6. Step 6: Final answer
    x = 68,215.67

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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.