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Finding the Fourth Proportional to 99,662.36, 149,530 and 46,379.76

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Solution

The fourth proportional to 99,662.36, 149,530 and 46,379.76 is: 69,586.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,662.36 : 149,530 = 46,379.76 : x
  2. Step 2: Convert to fraction form
    99,662.36/149,530 = 46,379.76/x
  3. Step 3: Cross multiply
    99,662.36x = 149,530 × 46,379.76
  4. Step 4: Simplify right side
    99,662.36x = 6,935,165,512.80
  5. Step 5: Solve for x
    x = 6,935,165,512.80/99,662.36
  6. Step 6: Final answer
    x = 69,586.61

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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.