Home / 76,942.85-115,201.72-39,422.13

Finding the Fourth Proportional to 76,942.85, 115,201.72 and 39,422.13

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Solution

The fourth proportional to 76,942.85, 115,201.72 and 39,422.13 is: 59,024.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,942.85 : 115,201.72 = 39,422.13 : x
  2. Step 2: Convert to fraction form
    76,942.85/115,201.72 = 39,422.13/x
  3. Step 3: Cross multiply
    76,942.85x = 115,201.72 × 39,422.13
  4. Step 4: Simplify right side
    76,942.85x = 4,541,497,083.51
  5. Step 5: Solve for x
    x = 4,541,497,083.51/76,942.85
  6. Step 6: Final answer
    x = 59,024.29

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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.