Home / 68,021.12-93,851.70-39,710.54

Finding the Fourth Proportional to 68,021.12, 93,851.70 and 39,710.54

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Solution

The fourth proportional to 68,021.12, 93,851.70 and 39,710.54 is: 54,790.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,021.12 : 93,851.70 = 39,710.54 : x
  2. Step 2: Convert to fraction form
    68,021.12/93,851.70 = 39,710.54/x
  3. Step 3: Cross multiply
    68,021.12x = 93,851.70 × 39,710.54
  4. Step 4: Simplify right side
    68,021.12x = 3,726,901,217.66
  5. Step 5: Solve for x
    x = 3,726,901,217.66/68,021.12
  6. Step 6: Final answer
    x = 54,790.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.