Home / 66,516.20-99,790.70-19,769.07

Finding the Fourth Proportional to 66,516.20, 99,790.70 and 19,769.07

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Solution

The fourth proportional to 66,516.20, 99,790.70 and 19,769.07 is: 29,658.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,516.20 : 99,790.70 = 19,769.07 : x
  2. Step 2: Convert to fraction form
    66,516.20/99,790.70 = 19,769.07/x
  3. Step 3: Cross multiply
    66,516.20x = 99,790.70 × 19,769.07
  4. Step 4: Simplify right side
    66,516.20x = 1,972,769,234.80
  5. Step 5: Solve for x
    x = 1,972,769,234.80/66,516.20
  6. Step 6: Final answer
    x = 29,658.48

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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.