Home / 81,541.89-122,331.24-28,951.38

Finding the Fourth Proportional to 81,541.89, 122,331.24 and 28,951.38

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Solution

The fourth proportional to 81,541.89, 122,331.24 and 28,951.38 is: 43,433.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,541.89 : 122,331.24 = 28,951.38 : x
  2. Step 2: Convert to fraction form
    81,541.89/122,331.24 = 28,951.38/x
  3. Step 3: Cross multiply
    81,541.89x = 122,331.24 × 28,951.38
  4. Step 4: Simplify right side
    81,541.89x = 3,541,658,215.11
  5. Step 5: Solve for x
    x = 3,541,658,215.11/81,541.89
  6. Step 6: Final answer
    x = 43,433.60

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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.