Home / 71,112.60-98,147.16-54,172.80

Finding the Fourth Proportional to 71,112.60, 98,147.16 and 54,172.80

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Solution

The fourth proportional to 71,112.60, 98,147.16 and 54,172.80 is: 74,767.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,112.60 : 98,147.16 = 54,172.80 : x
  2. Step 2: Convert to fraction form
    71,112.60/98,147.16 = 54,172.80/x
  3. Step 3: Cross multiply
    71,112.60x = 98,147.16 × 54,172.80
  4. Step 4: Simplify right side
    71,112.60x = 5,316,906,469.25
  5. Step 5: Solve for x
    x = 5,316,906,469.25/71,112.60
  6. Step 6: Final answer
    x = 74,767.43

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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.