Home / 74,556.89-102,890.97-42,731.90

Finding the Fourth Proportional to 74,556.89, 102,890.97 and 42,731.90

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Solution

The fourth proportional to 74,556.89, 102,890.97 and 42,731.90 is: 58,971.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,556.89 : 102,890.97 = 42,731.90 : x
  2. Step 2: Convert to fraction form
    74,556.89/102,890.97 = 42,731.90/x
  3. Step 3: Cross multiply
    74,556.89x = 102,890.97 × 42,731.90
  4. Step 4: Simplify right side
    74,556.89x = 4,396,726,640.94
  5. Step 5: Solve for x
    x = 4,396,726,640.94/74,556.89
  6. Step 6: Final answer
    x = 58,971.43

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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.