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Finding the Fourth Proportional to 60,660, 90,993.24 and 19,110.24

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Solution

The fourth proportional to 60,660, 90,993.24 and 19,110.24 is: 28,666.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,660 : 90,993.24 = 19,110.24 : x
  2. Step 2: Convert to fraction form
    60,660/90,993.24 = 19,110.24/x
  3. Step 3: Cross multiply
    60,660x = 90,993.24 × 19,110.24
  4. Step 4: Simplify right side
    60,660x = 1,738,902,654.78
  5. Step 5: Solve for x
    x = 1,738,902,654.78/60,660
  6. Step 6: Final answer
    x = 28,666.38

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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.