Home / 81,542.89-122,332.74-28,952.38

Finding the Fourth Proportional to 81,542.89, 122,332.74 and 28,952.38

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Solution

The fourth proportional to 81,542.89, 122,332.74 and 28,952.38 is: 43,435.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,542.89 : 122,332.74 = 28,952.38 : x
  2. Step 2: Convert to fraction form
    81,542.89/122,332.74 = 28,952.38/x
  3. Step 3: Cross multiply
    81,542.89x = 122,332.74 × 28,952.38
  4. Step 4: Simplify right side
    81,542.89x = 3,541,823,974.92
  5. Step 5: Solve for x
    x = 3,541,823,974.92/81,542.89
  6. Step 6: Final answer
    x = 43,435.10

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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.