Home / 76,906.20-115,359.30-35,434.20

Finding the Fourth Proportional to 76,906.20, 115,359.30 and 35,434.20

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Solution

The fourth proportional to 76,906.20, 115,359.30 and 35,434.20 is: 53,151.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,906.20 : 115,359.30 = 35,434.20 : x
  2. Step 2: Convert to fraction form
    76,906.20/115,359.30 = 35,434.20/x
  3. Step 3: Cross multiply
    76,906.20x = 115,359.30 × 35,434.20
  4. Step 4: Simplify right side
    76,906.20x = 4,087,664,508.06
  5. Step 5: Solve for x
    x = 4,087,664,508.06/76,906.20
  6. Step 6: Final answer
    x = 53,151.30

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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.