Home / 78,619.01-117,892.20-25,301.06

Finding the Fourth Proportional to 78,619.01, 117,892.20 and 25,301.06

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Solution

The fourth proportional to 78,619.01, 117,892.20 and 25,301.06 is: 37,939.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,619.01 : 117,892.20 = 25,301.06 : x
  2. Step 2: Convert to fraction form
    78,619.01/117,892.20 = 25,301.06/x
  3. Step 3: Cross multiply
    78,619.01x = 117,892.20 × 25,301.06
  4. Step 4: Simplify right side
    78,619.01x = 2,982,797,036.27
  5. Step 5: Solve for x
    x = 2,982,797,036.27/78,619.01
  6. Step 6: Final answer
    x = 37,939.90

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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.