Home / 85,638.36-118,181.04-47,912.64

Finding the Fourth Proportional to 85,638.36, 118,181.04 and 47,912.64

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Solution

The fourth proportional to 85,638.36, 118,181.04 and 47,912.64 is: 66,119.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,638.36 : 118,181.04 = 47,912.64 : x
  2. Step 2: Convert to fraction form
    85,638.36/118,181.04 = 47,912.64/x
  3. Step 3: Cross multiply
    85,638.36x = 118,181.04 × 47,912.64
  4. Step 4: Simplify right side
    85,638.36x = 5,662,365,624.35
  5. Step 5: Solve for x
    x = 5,662,365,624.35/85,638.36
  6. Step 6: Final answer
    x = 66,119.50

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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.