Home / 91,992.43-138,042.19-38,680.55

Finding the Fourth Proportional to 91,992.43, 138,042.19 and 38,680.55

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Solution

The fourth proportional to 91,992.43, 138,042.19 and 38,680.55 is: 58,043.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,992.43 : 138,042.19 = 38,680.55 : x
  2. Step 2: Convert to fraction form
    91,992.43/138,042.19 = 38,680.55/x
  3. Step 3: Cross multiply
    91,992.43x = 138,042.19 × 38,680.55
  4. Step 4: Simplify right side
    91,992.43x = 5,339,547,739.14
  5. Step 5: Solve for x
    x = 5,339,547,739.14/91,992.43
  6. Step 6: Final answer
    x = 58,043.34

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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.