Home / 78,399.08-117,540.30-34,017.56

Finding the Fourth Proportional to 78,399.08, 117,540.30 and 34,017.56

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Solution

The fourth proportional to 78,399.08, 117,540.30 and 34,017.56 is: 51,001.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,399.08 : 117,540.30 = 34,017.56 : x
  2. Step 2: Convert to fraction form
    78,399.08/117,540.30 = 34,017.56/x
  3. Step 3: Cross multiply
    78,399.08x = 117,540.30 × 34,017.56
  4. Step 4: Simplify right side
    78,399.08x = 3,998,434,207.67
  5. Step 5: Solve for x
    x = 3,998,434,207.67/78,399.08
  6. Step 6: Final answer
    x = 51,001.03

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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.