Home / 38,339.43-57,456.63-28,971.78

Finding the Fourth Proportional to 38,339.43, 57,456.63 and 28,971.78

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Solution

The fourth proportional to 38,339.43, 57,456.63 and 28,971.78 is: 43,417.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,339.43 : 57,456.63 = 28,971.78 : x
  2. Step 2: Convert to fraction form
    38,339.43/57,456.63 = 28,971.78/x
  3. Step 3: Cross multiply
    38,339.43x = 57,456.63 × 28,971.78
  4. Step 4: Simplify right side
    38,339.43x = 1,664,620,843.90
  5. Step 5: Solve for x
    x = 1,664,620,843.90/38,339.43
  6. Step 6: Final answer
    x = 43,417.99

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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.