Home / 82,945.11-124,418.49-20,615.61

Finding the Fourth Proportional to 82,945.11, 124,418.49 and 20,615.61

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Solution

The fourth proportional to 82,945.11, 124,418.49 and 20,615.61 is: 30,923.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,945.11 : 124,418.49 = 20,615.61 : x
  2. Step 2: Convert to fraction form
    82,945.11/124,418.49 = 20,615.61/x
  3. Step 3: Cross multiply
    82,945.11x = 124,418.49 × 20,615.61
  4. Step 4: Simplify right side
    82,945.11x = 2,564,963,066.63
  5. Step 5: Solve for x
    x = 2,564,963,066.63/82,945.11
  6. Step 6: Final answer
    x = 30,923.62

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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.