Home / 85,638.49-118,181.21-47,912.77

Finding the Fourth Proportional to 85,638.49, 118,181.21 and 47,912.77

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Solution

The fourth proportional to 85,638.49, 118,181.21 and 47,912.77 is: 66,119.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,638.49 : 118,181.21 = 47,912.77 : x
  2. Step 2: Convert to fraction form
    85,638.49/118,181.21 = 47,912.77/x
  3. Step 3: Cross multiply
    85,638.49x = 118,181.21 × 47,912.77
  4. Step 4: Simplify right side
    85,638.49x = 5,662,388,661.93
  5. Step 5: Solve for x
    x = 5,662,388,661.93/85,638.49
  6. Step 6: Final answer
    x = 66,119.67

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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.