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Finding the Fourth Proportional to 96,579.70, 144,840.10 and 66,785.48

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Solution

The fourth proportional to 96,579.70, 144,840.10 and 66,785.48 is: 100,157.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,579.70 : 144,840.10 = 66,785.48 : x
  2. Step 2: Convert to fraction form
    96,579.70/144,840.10 = 66,785.48/x
  3. Step 3: Cross multiply
    96,579.70x = 144,840.10 × 66,785.48
  4. Step 4: Simplify right side
    96,579.70x = 9,673,215,601.75
  5. Step 5: Solve for x
    x = 9,673,215,601.75/96,579.70
  6. Step 6: Final answer
    x = 100,157.86

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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.