Home / 85,623.75-118,160.78-47,905.29

Finding the Fourth Proportional to 85,623.75, 118,160.78 and 47,905.29

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Solution

The fourth proportional to 85,623.75, 118,160.78 and 47,905.29 is: 66,109.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,623.75 : 118,160.78 = 47,905.29 : x
  2. Step 2: Convert to fraction form
    85,623.75/118,160.78 = 47,905.29/x
  3. Step 3: Cross multiply
    85,623.75x = 118,160.78 × 47,905.29
  4. Step 4: Simplify right side
    85,623.75x = 5,660,526,193.00
  5. Step 5: Solve for x
    x = 5,660,526,193.00/85,623.75
  6. Step 6: Final answer
    x = 66,109.30

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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.