Home / 66,400.38-99,620.08-19,654.46

Finding the Fourth Proportional to 66,400.38, 99,620.08 and 19,654.46

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Solution

The fourth proportional to 66,400.38, 99,620.08 and 19,654.46 is: 29,487.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,400.38 : 99,620.08 = 19,654.46 : x
  2. Step 2: Convert to fraction form
    66,400.38/99,620.08 = 19,654.46/x
  3. Step 3: Cross multiply
    66,400.38x = 99,620.08 × 19,654.46
  4. Step 4: Simplify right side
    66,400.38x = 1,957,978,877.56
  5. Step 5: Solve for x
    x = 1,957,978,877.56/66,400.38
  6. Step 6: Final answer
    x = 29,487.46

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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.