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Finding the Fourth Proportional to 66,239.78, 91,383.93 and 37,553.39

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Solution

The fourth proportional to 66,239.78, 91,383.93 and 37,553.39 is: 51,808.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,239.78 : 91,383.93 = 37,553.39 : x
  2. Step 2: Convert to fraction form
    66,239.78/91,383.93 = 37,553.39/x
  3. Step 3: Cross multiply
    66,239.78x = 91,383.93 × 37,553.39
  4. Step 4: Simplify right side
    66,239.78x = 3,431,775,906.10
  5. Step 5: Solve for x
    x = 3,431,775,906.10/66,239.78
  6. Step 6: Final answer
    x = 51,808.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.