Home / 89,371.96-123,338.94-51,143.20

Finding the Fourth Proportional to 89,371.96, 123,338.94 and 51,143.20

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Solution

The fourth proportional to 89,371.96, 123,338.94 and 51,143.20 is: 70,580.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,371.96 : 123,338.94 = 51,143.20 : x
  2. Step 2: Convert to fraction form
    89,371.96/123,338.94 = 51,143.20/x
  3. Step 3: Cross multiply
    89,371.96x = 123,338.94 × 51,143.20
  4. Step 4: Simplify right side
    89,371.96x = 6,307,948,076.21
  5. Step 5: Solve for x
    x = 6,307,948,076.21/89,371.96
  6. Step 6: Final answer
    x = 70,580.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.