Home / 78,540.01-117,765.36-53,610.23

Finding the Fourth Proportional to 78,540.01, 117,765.36 and 53,610.23

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Solution

The fourth proportional to 78,540.01, 117,765.36 and 53,610.23 is: 80,384.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,540.01 : 117,765.36 = 53,610.23 : x
  2. Step 2: Convert to fraction form
    78,540.01/117,765.36 = 53,610.23/x
  3. Step 3: Cross multiply
    78,540.01x = 117,765.36 × 53,610.23
  4. Step 4: Simplify right side
    78,540.01x = 6,313,428,330.05
  5. Step 5: Solve for x
    x = 6,313,428,330.05/78,540.01
  6. Step 6: Final answer
    x = 80,384.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.