Home / 83,621.49-115,419.78-51,772.29

Finding the Fourth Proportional to 83,621.49, 115,419.78 and 51,772.29

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Solution

The fourth proportional to 83,621.49, 115,419.78 and 51,772.29 is: 71,459.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,621.49 : 115,419.78 = 51,772.29 : x
  2. Step 2: Convert to fraction form
    83,621.49/115,419.78 = 51,772.29/x
  3. Step 3: Cross multiply
    83,621.49x = 115,419.78 × 51,772.29
  4. Step 4: Simplify right side
    83,621.49x = 5,975,546,321.90
  5. Step 5: Solve for x
    x = 5,975,546,321.90/83,621.49
  6. Step 6: Final answer
    x = 71,459.46

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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.