Home / 76,851.48-115,287.30-30,098.28

Finding the Fourth Proportional to 76,851.48, 115,287.30 and 30,098.28

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Solution

The fourth proportional to 76,851.48, 115,287.30 and 30,098.28 is: 45,151.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,851.48 : 115,287.30 = 30,098.28 : x
  2. Step 2: Convert to fraction form
    76,851.48/115,287.30 = 30,098.28/x
  3. Step 3: Cross multiply
    76,851.48x = 115,287.30 × 30,098.28
  4. Step 4: Simplify right side
    76,851.48x = 3,469,949,435.84
  5. Step 5: Solve for x
    x = 3,469,949,435.84/76,851.48
  6. Step 6: Final answer
    x = 45,151.37

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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.