Home / 89,384.40-123,372.60-51,680.40

Finding the Fourth Proportional to 89,384.40, 123,372.60 and 51,680.40

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Solution

The fourth proportional to 89,384.40, 123,372.60 and 51,680.40 is: 71,331.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,384.40 : 123,372.60 = 51,680.40 : x
  2. Step 2: Convert to fraction form
    89,384.40/123,372.60 = 51,680.40/x
  3. Step 3: Cross multiply
    89,384.40x = 123,372.60 × 51,680.40
  4. Step 4: Simplify right side
    89,384.40x = 6,375,945,317.04
  5. Step 5: Solve for x
    x = 6,375,945,317.04/89,384.40
  6. Step 6: Final answer
    x = 71,331.75

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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.